Most informative speeches about ideas require the use of definition or explanation

You have been assigned a speech, presentation, or essay, but you have no clue what to talk about. A powerful presentation begins with a compelling topic that sparks your interest and hooks the audience. But you also need to discuss something you feel excited to research and discuss. 

This guide contains 333 informative speech topics for your next presentation, plus pro tips for delivering the best presentation possible.

What Is An Informative Speech?

Informative speeches aim to teach or instruct the audience about a topic. They include objective information and fact-based research but can incorporate a unique perspective, compelling storytelling, or a powerful take-home message. Unlike a celebratory wedding toast or an inaugural speech, informative speeches are written specifically to educate.

The six key types of informative speeches are: 

  1. Definition speeches: This speech aims to explain a concept or theory. For example, a speech topic starting with “What is…?” is usually a definition-type informative speech. 
  2. Explanatory speeches: These speeches explain how something works. For example, an explanatory speech could explain how your brain processes information or how an electric car works. 
  3. Demonstrative speeches: These classic “how-to’s” show the audience how to perform a task and often include a visual presentation. For example, students could teach their classmates how to be more productive or cook a healthy meal.  
  4. Comparative speeches: When a speaker compares or contrasts two alternative things, they help the audience understand the similarities or differences between two topics. For example, a comparative speech may weigh the pros and cons of private versus public schools. 
  5. Descriptive speeches: This informative speech describes a person, place, or thing and explains why the subject is essential. For example, a student may teach their classmates about a historical figure, or an entrepreneur may give a descriptive speech about the specifics of their product idea.
  6. Persuasive informative speeches: Although persuasive speeches are often categorized separately, some informative speeches can cross over into persuasion by using evidence to convince the audience why a particular method or perspective is better than its alternatives. For example, a salesperson may give a presentation to convince clients to buy their services, or a mental health advocate may give a speech to persuade people to do yoga more regularly. 

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How To Pick An Informative Speech Topic: The Five W’s

Whether you want to give a top-notch school speech assignment or a groundbreaking TED Talk, the best informative speeches have one thing in common: they deliver a purposeful message with a captivating delivery. You must understand the basic who, what, when, where, and why to pick the perfect topic. 

  • Who: Before you start looking for topics, you should know who your audience is. A college speech class is a far different audience than a room of conference attendees. Consider what your audience is interested in, why they should care about your speech and their level of knowledge about the topic. If you talk about something too basic, they may be bored, but if you discuss something too technical, they may have difficulty understanding your speech. 
  • What: Consider your passions and existing knowledge about a subject. The “what” of your speech is the meat of the presentation. Imagine a three-circle Venn diagram. The three circles are labeled: “things I am interested in,” “things my audience cares about,” and “things I can research.” The center point where these three circles overlap is the sweet spot for your speech topic. 
  • When (Length): The length of your speech can drastically impact how in-depth you dive into the topic. A five-minute speech should cover a niche topic or a high-level concept. A thirty-minute to an hour-long presentation can teach about a more detailed topic. 
  • Where: If you’re giving a speech in a meeting room at an office, your performance will likely be very different from speaking on stage in a large auditorium. Consider where you will be speaking and what kind of technology (projector, large screen, whiteboard, etc.) you will have available. The geographic location of your speech can also determine your selection of a local or regional topic relevant to the community. 
  • Why: Most importantly, you should know the purpose of your speech. If your goal is to get a good grade, it may help you pay more attention to following the teacher’s rubric. If your goal is to convince the audience to make a lifestyle change or donate to an important cause, you should structure your speech with the core “why” in mind. 

The best speeches combine a simple message with charismatic delivery, an easily digestible structure, and something the audience can relate to. The essence of a great speech is that it arouses something in the audience, such as the motivation to take action or to see things in a new way.

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List of Informative Speech Topics: 333 Ideas to Spark Your Creativity

In an informative speech, it is essential to have plenty of evidence or data to support your claims. But even the most well-researched presentation can feel hollow without the passion for delivering it authentically. 

As you explore ideas for your speech, you should naturally gravitate toward intriguing and exciting topics. Giving a speech about something you think your teacher or colleagues will like (rather than what you’re truly interested in) could ultimately be inauthentic or boring. Take note of what makes your heart beat a little faster and follow that curiosity. 

Easy Informative Speech Topics

If you’re in a pinch, choose a speech topic that doesn’t require extensive explanations to get the point across. It may be a good idea to avoid anything controversial or technical. Instead, choose a straightforward demonstrative or descriptive topic with a wide range of online information.

  1. How to improve your communication skills
  2. The most memorable speeches in history
  3. Why you should buy an electric car 
  4. The most popular cars of the year
  5. How to read body language 
  6. Top habits of successful people
  7. The most famous actors in history
  8. The benefits of time in nature
  9. Lesser known presidents
  10. Most popular breeds of dogs
  11. The worst natural disasters in the world 
  12. How to eat healthier  
  13. Harmful impacts of technology
  14. How to survive without electricity 
  15. The richest people in the world 
  16. The top companies in the world
  17. Child geniuses and prodigies
  18. How does sugar influence the body?
  19. The history of Disneyland
  20. How to break bad habits
  21. Top beauty products for younger skin
  22. How to do your homework faster 
  23. How to be more productive 
  24. High school students should do these 5 things before graduating
  25. Why high school students should take a gap year before college
  26. The best healthy snacks 
  27. Why you should go vegan
  28. How to be more confident 
  29. How to start a business
  30. Fashion through the decades 

Pro Tip: Start your speech with an attention-grabbing hook that draws the audience in to listen. Try not to start by mentioning a technical difficulty (“Is this microphone working?”) or saying a lackluster nicety (“Thanks for having me.”).

Instead, try starting with:

  • A story: “I’m here for a reason. And It’s an interesting story….”
  • A big idea: “The single most important thing I want to share with you today is….”
  • A quirky one-liner or interesting fact: “You might have always thought….”

Here is a guide on How to Start a Speech: Best and Worst Speech Openers. 

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Informative Speech Topics for College

If public speaking isn’t scary enough, college speech classes can be brutal. You want to impress your professor without thoroughly embarrassing yourself in front of your peers. These topics are scholarly without being boring. 

  1. How you can reduce your carbon footprint
  2. Different forms of learning
  3. The truth about microplastics and possible alternatives
  4. How to ace a college test 
  5. Why schools shouldn’t give homework 
  6. America’s fastest-growing cities
  7. The differences between female and male communication
  8. The best marketing tactics
  9. The importance of education for a country’s economy 
  10. Ethical questions of artificial intelligence
  11. Unique ways to stop global climate change
  12. How to live to be 100
  13. Benefits of E-learning
  14. History of education in America
  15. How to eradicate poverty
  16. The real picture of foster care in America
  17. How to decide on a college major
  18. Pros and cons of the current education system
  19. Economics of urban versus rural development
  20. The history of agriculture 
  21. How ancient Egyptians built the pyramids
  22. How to prevent the top 5 leading causes of death in America
  23. Understanding industrial hemp
  24. Pros and cons of remote work
  25. How college students can become millionaires by age 50 with monthly investing
  26. How to start an organic garden
  27. Private vs. public school
  28. The importance of discipline
  29. The most useful websites for college students
  30. Where does public university funding come from

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Fun Informative Speech Topics

Most people don’t realize that playful topics like video games and reality TV can still be informative. These less serious subjects have the potential to become great speeches that invoke laughter, excitement, or new perspectives. 

  1. Can procrastination be good for you?
  2. Myth or reality? We only use 10% of our brains
  3. The funniest commercials of all time
  4. Bizzare sports you didn’t know existed 
  5. How snake venom attacks the body
  6. What will humans look like in the future? 
  7. Weirdest medical facts
  8. The strangest phobias 
  9. Secrets to a great relationship
  10. The fastest cars in the world 
  11. What causes hiccups
  12. Evidence of life on Mars 
  13. The world history of tattoos 
  14. Why college students love fast food 
  15. The evolution of video games 
  16. How cryptocurrency can change finance 
  17. Where do stereotypes come from?
  18. The most bizarre conspiracy theories 
  19. The most influential musicians of our time
  20. Top craziest amusement park rides in the world
  21. The most fun things to do when you’re bored
  22. History of tattoo art
  23. The seven wonders of the world
  24. How to survive an annoying roommate
  25. The truth about reality shows
  26. How to create a bucket list
  27. The secrets behind the best TV shows 
  28. Weirdest foods taste surprisingly delicious
  29. How to talk to people you don’t like 

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Interesting Informative Speech Topics

The most viral TED Talks combine a compelling or unique idea with exceptional nonverbal delivery. These interesting topics are sure to get your audience thinking.

  1. The neuroscience of attraction
  2. Mind-blowing facts about volcanoes
  3. The psychology of selling things 
  4. Why you should turn your lawn into a garden
  5. Proof that aliens are real/fake 
  6. How to start a business for under $100
  7. The history of America from a minority perspective 
  8. How technology affects our brains
  9. What would happen to the economy if everyone grew their own food?
  10. The science and ethics of genetic modification 
  11. How the electric car originated 
  12. Elon Musk’s rise to success 
  13. What is neuro-linguistic programming (NLP)?
  14. How deaf people talk with emotion 
  15. Why smiles are contagious 

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Informative Speech Topics About Science

From biology to chemistry to genetics, science encompasses many subjects. Where modern technology meets cutting-edge discoveries, these topics are for inquisitive researchers who want to dig into the data. 

  1. How your brain works
  2. History of space exploration
  3. How solar panels work
  4. The evolution of plants
  5. Fascinating origins of plant medicines
  6. How DNA evidence is used
  7. How galaxies are formed 
  8. How science is influenced by corporations 
  9. Why dinosaurs really went extinct
  10. The oldest fossils ever found 
  11. How does the human brain work?
  12. The effects of music on the brain  
  13. The life of Albert Einstein
  14. How earthquakes can be predicted
  15. The craziest scientists in history
  16. What is CRISPR?
  17. Potential cures for cancer 
  18. What is epigenetics?

Pro Tip: Google Scholar and PubMed are two excellent resources for peer-reviewed scientific literature. Accredited institutions conduct these studies and have undergone the rigor of the scientific method. They even include easy copy-and-paste citations if you need to turn in a bibliography with your speech.

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Informative Speech Topics about Animals 

From cuddly pets to the alien-like mystery creatures of the deep ocean, animals are universally fascinating. 

  1. How to train a dog
  2. The most dangerous animals in the ocean
  3. How elephants use plants to medicate themselves 
  4. The science behind the fastest animals in the world
  5. Can depression be treated with emotional support animals?
  6. Comparing reptiles versus mammals
  7. The strongest animal in the world
  8. Top 10 strangest animals on Earth
  9. Comparing human and primate brains
  10. Animals that have their own languages
  11. Ethical questions with animal testing
  12. What causes animals to become extinct? 
  13. How to adopt a cat
  14. Pros and cons of the pet adoption system
  15. Is it kind to keep a monkey as a pet?

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Informative Speech Topics Sports

Fitness, sports medicine, and professional sports teams are just scraping the surface regarding this subject. You can talk about the inspiring life of your favorite player or game history. The speech topics are perfect for anyone who loves to sweat and cheer.

  1. How sports teach kids discipline 
  2. The importance of physical activity for stress relief
  3. Why companies should promote workplace fitness programs 
  4. Top-paying careers in sports 
  5. How people with disabilities can still play sports
  6. Football culture in the American south 
  7. The importance of sports for children’s socialization
  8. The role of sports and masculinity in young boys 
  9. Gambling problems in sports
  10. What makes a great sports coach? 
  11. The best football players of all time 
  12. How yoga can complement workouts
  13. How to prevent sports injuries 
  14. The best physical therapy for college athletes
  15. The life of Michael Jordan
  16. Game-changing athletes in history 
  17. Lebron James’ secret to success  
  18. How Jackie Robinson transformed baseball 
  19. The best nutrition for athletes, based on science
  20. Top vegan athletes in the world 
  21. Why cheerleading is/isn’t a real sport
  22. Controversial moments in the Olympics 
  23. Modern controversies about transgender athletes 
  24. The most extreme sports in the world
  25. How hockey changed my life
  26. Pros and cons of CrossFit
  27. Why swimming is one of the healthiest workouts
  28. How adult hobby sports can improve socialization
  29. Daily exercise improves mental health 
  30. The best at-home workouts
  31. Top marketing strategies used by the Super Bowl
  32. How the Olympics promotes international peace 
  33. Should pro athletes have salary caps?
  34. How college athletes go pro
  35. Top female athletes in the world
  36. Interesting sports from around the world
  37. Why height is not the most important factor in basketball
  38. Why soccer is the most popular international sport
  39. Why women’s soccer gets less media coverage than men’s
  40. The best solo sports for introverts 
  41. How handicapped people can still play sports 
  42. The most inspirational handicapped athletes 

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Cultural Informative Speech Topics

Learning about different cultures can drastically expand your viewpoint of the world. These speech ideas cover everything from language to ancient history to pop culture. 

  1. How to learn about local culture while traveling
  2. The importance of workplace culture
  3. How to build a positive corporate culture 
  4. How social media connects and promotes culture 
  5. The oldest cultures in the world 
  6. Modern versus traditional gender roles 
  7. How women have transformed corporate leadership 
  8. The dangers of hustle culture
  9. How social media culture impacts self-esteem
  10. How to learn from watching movies
  11. The rise of podcasts and their role in modern culture 
  12. The role of social media in business 
  13. How immigrants maintain cultural traditions in their new countries
  14. Ancient archeological artifacts you’ve never heard of
  15. Native American spiritual traditions
  16. Holy herbs and plants across global cultures
  17. How to make an African tribal basket
  18. The portrayal of black culture in the media
  19. Culture of Scandinavia
  20. Burial rituals in ancient Mesopotamia 
  21. History and meaning of the Om symbol
  22. The history of Buddhism
  23. How to show respect in Japanese culture
  24. The cultural history of African Americans 
  25. Chinese traditional foods 
  26. Top 10 foreign dishes you have to try before you die
  27. The most important spiritual symbols in the world
  28. Generational differences in Mexican culture
  29. The symbolism of marigolds in Mexican traditions
  30. What is Dia De Los Muertos?  

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Informative Speech Topics About History

They say, “history repeats itself.” Consider giving a unique or lesser-known perspective about historical events for a thought-provoking speech. Use museum artifacts and first-hand accounts to guide your points. 

  1. The Civil Rights Movement
  2. The oldest civilizations in the world
  3. Nelson Mandela’s historical impact
  4. The truth about colonization and Thanksgiving 
  5. How the Industrial Revolution impacted the environment 
  6. The real story of the Titanic 
  7. The craziest criminals in history  
  8. What caused the Great Depression? 
  9. What schools get wrong about black history 
  10. Religion during the age of the Aztecs
  11. Archeological evidence of aliens
  12. Ancient history of dogs and wolves 
  13. What caused the Salem witch trials?
  14. The American Revolution
  15. The role of Christianity in slavery
  16. Human rights violations throughout history
  17. How life changed for Native Americans after colonization 
  18. The role of urbanization on the changing American landscape
  19. The cowboy era: myths and truths 
  20. The American Constitution
  21. The most influential people in world history
  22. Forming of the United Nations
  23. What caused World War I?
  24. Financial panics and recessions throughout history
  25. The Prohibition era 
  26. What led to consumerism in society? 
  27. The Vietnam War
  28. The California Gold Rush
  29. The true story of Pocahontas
  30. Little-known facts about Mexican history

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Informative Speech Topics About Music

Music is the soundtrack to our lives. Beyond mere entertainment, its impact dives into the roots of culture, identity, and brain function. Here are some exciting ways to incorporate your love of music into an informative speech. 

  1. How music can help mental health 
  2. Why you should learn an instrument
  3. How listening to music improves your productivity
  4. Genres of music 
  5. Links between classical music and IQ
  6. Why do people bond over music 
  7. Rarest instruments in the world
  8. The easiest instruments to play
  9. Best country musicians of all time
  10. How hip hop music has shaped culture in America
  11. Evolution of rap and hip hop 
  12. The origins of rock n’ roll in southern blues music
  13. The history of opera
  14. The best electronic dance music
  15. The impact of reggae music
  16. How punk rock got its start 
  17. How folk music shaped Appalachia 
  18. Country music hall of fame
  19. Must-see musical landmarks around the world
  20. Importance of gospel music
  21. The ethics of sampling other artist’s music
  22. How music shapes subculture 
  23. Has social media made record companies obsolete?
  24. The importance of musical education in public schools
  25. Music as a form of protest
  26. How sad music helps you overcome heartbreaks
  27. Why music shapes generations
  28. How dancing can change your mindset
  29. From the phonograph to iPhone: History of music machines

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Health Informative Speech Topics

The ever-changing landscape of health offers a wealth of resources. Leave an impact on your audience by inspiring them to improve their eating habits or approach healthy living in a new way. Be sure to find the right sources for these speeches to make sure you are citing correct health science.

  1. How to extend your lifespan 
  2. Links between diet and mental illnesses 
  3. How to cook healthy food on a budget 
  4. Why a daily walk outside can transform your health
  5. History of herbal medicine 
  6. Let food be thy medicine: From Hippocrates to modern day food pyramid
  7. Why you should do yoga for 15 minutes a day
  8. Benefits and drawbacks of a vegetarian diet
  9. The healthiest fruits in the world 
  10. What is really in processed food?
  11. Is weight lifting or cardio better for burning fat?
  12. How agriculture affects our health
  13. The gut microbiome
  14. The dangers of pesticides in our food system
  15. How soil health impacts human health 
  16. Who controls the food system? 
  17. The science behind keto diets
  18. The dangers of low-fat diets
  19. Top 5 best foods for brain function
  20. The daily habits of the healthiest people in the world
  21. Differences in definitions of health
  22. European versus American food ingredients 
  23. The role of fats in brain function 
  24. How to fix a headache
  25. The benefits of magnesium
  26. The best supplements, according to science 
  27. The main signs of a stroke
  28. The chronic disease epidemic in America 
  29. How to lose weight the healthy way
  30. Why you should avoid eating seed oils
  31. Why you should stop eating gluten 
  32. How to prevent arthritis
  33. The real causes of diabetes
  34. Is meat actually bad for you? Pros and cons
  35. How to stop the mental health epidemic 
  36. How dental health impacts your digestion
  37. Amazing benefits of black seed oil
  38. The Harvard Longevity Project: Why happy people live longer
  39. Ancient health remedies from around the world
  40. Why you should eat fermented foods
  41. Causes of cancer and how to prevent it
  42. Why people should donate their organs
  43. Effects of radiation
  44. The healthiest cultures in the world 
  45. Why obesity is a modern problem
  46. How to have stronger bones
  47. Healthcare access for minorities
  48. Why fast food restaurants are addictive
  49. Pros and cons of salt
  50. How to overcome stress
  51. The dangers of e-cigarettes
  52. People need to drink more water
  53. The insurance and healthcare system in America
  54. How friendships improve your health
  55. Why couples should exercise together
  56. Benefits of dark chocolate
  57. Dangerous food additives you’ve never heard of
  58. Easy ways to improve your nutrition
  59. How to reverse hair loss
  60. Secrets to have healthy hair
  61. Benefits and drawbacks of stem cell research 
  62. Why you should stop drinking soda
  63. How to reduce asthma attacks
  64. Health benefits of ginger
  65. Why you should drink tea

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Key Takeaways: Find Inspiration for a Speech

Any informative topic can be used to craft a speech, but a showstopping presentation requires thinking outside the box and approaching your speech from a unique point of view. Before you settle on a topic for your next speech, be sure that your speech idea is:

  • Authentically interesting: Discussing something that doesn’t spark your interest is no use. Choose a topic or idea that you actually care about for an authentic and passionate delivery. 
  • Relevant to your audience: If you don’t know your audience, you might as well be speaking to a wall. Professional presenters understand the general knowledge level of their audience and what information will be valuable or interesting to them. 
  • Easy to research: Obscure topics can be alluring and challenging to research. Choose a topic that has plenty of information available in books or online. Be sure to use reputable sources and cite them when necessary.
  • The proper length: The depth and detail of your speech ultimately depend on the length of time you have to talk. Pick a subject that you can thoroughly describe in the allotted time frame.  

Once you narrow down a few of your favorite topic ideas, start brainstorming how you want your speech to impact the audience. Use these 10 Presentation Ideas That Will Radically Improve Your Presentation Skills, such as:

  • Why you should save the best for first and last
  • How to design epic presentation slides
  • Why you shouldn’t over-rehearse
  • How to own the stage 

What is an informative speech of explanation?

Explanatory speeches This type of informative speech is similar to descriptive speeches, except you rarely provide visual details about the topic of this speech and instead give specific information about why it is the way it is.

What is the use of informative speech?

The purpose of the informative speech is to provide interesting, useful, and unique information to your audience. By dedicating yourself to the goals of providing information and appealing to your audience, you can take a positive step toward succeeding in your efforts as an informative speaker.

What is the most common type of informative speech?

The most common type of informative speech is a lecture and as a student you are likely to hear lectures very frequently. An informative speech simply provides information. It isn't designed to persuade an audience to think a particular way (a persuasive speech) or to be able to do something (a demonstration speech).

What are the 3 main purposes of an informative speech?

A good informative speech conveys accurate information to the audience in a way that is clear and that keeps the listener interested in the topic. Achieving all three of these goals—accuracy, clarity, and interest—is the key to your effectiveness as a speaker.