| 1 | — |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 2 | — |  | Making Sense with Sam Harris | Sam Harris | |
| 3 | — |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 4 | — |  | Science Vs | Spotify Studios | |
| 5 | — |  | StarTalk Radio | Neil deGrasse Tyson | |
| 6 | 1 |  | Radiolab | WNYC Studios | |
| 7 | 1 |  | Ologies with Alie Ward | Alie Ward | |
| 8 | 1 |  | The Naked Scientists Podcast | The Naked Scientists | |
| 9 | 5 |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 10 | — |  | ScienceStuff | iHeartPodcasts | |
| 11 | 5 |  | Unexplainable | Vox | |
| 12 | 17 |  | Rewilding the World with Ben Goldsmith | Ben Goldsmith | |
| 13 | 1 |  | The Psychology Podcast | iHeartPodcasts | |
| 14 | 120 |  | Google DeepMind: The Podcast | Hannah Fry | |
| 15 | 2 | T | The Human Behavior Podcast | The Human Behavior Podcast | |
| 16 | 5 |  | The Weirdest Thing I Learned This Week | Popular Science | |
| 17 | 1 |  | Curious Cases | BBC Radio 4 | |
| 18 | 23 | T | Two Psychologists Four Beers | Yoel Inbar, Michael Inzlicht, and Alexa Tullett | |
| 19 | 35 |  | Uncharted with Hannah Fry | BBC Radio 4 | |
| 20 | 55 |  | More or Less | BBC Radio 4 | |
| 21 | 98 |  | Daniel and Kelly’s Extraordinary Universe | iHeartPodcasts | |
| 22 | 7 |  | The Science of Happiness | PRX and Greater Good Science Center | |
| 23 | 4 |  | Science Weekly | The Guardian | |
| 24 | 99 |  | Paranormal Mysteries | Nic Ryan | Paranormal Mysteries Podcast | |
| 25 | — |  | Oceans: Life Under Water | Crowd Network | Greenpeace UK | |
| 26 | 48 | C | Changing Minds with Owen Fitzpatrick | Owen Fitzpatrick | |
| 27 | 6 |  | This Podcast Will Kill You | Exactly Right and iHeartPodcasts | |
| 28 | 139 | A | Ask the Naked Scientists | Dr Chris Smith | |
| 29 | 15 |  | Discovery | BBC World Service | |
| 30 | 63 |  | In Defense of Plants Podcast | In Defense of Plants | |
| 31 | 144 |  | The Quanta Podcast | Quanta Magazine | |
| 32 | 103 |  | The Nature Of with Willow Defebaugh | Atmos | |
| 33 | 14 |  | Blurry Creatures | Blurry Creatures | |
| 34 | 17 |  | Speaking of Psychology | American Psychological Association | |
| 35 | — |  | This Week in Cardiology | Medscape | |
| 36 | — |  | That's Absurd Please Elaborate | Trace Elements Media | |
| 37 | 132 |  | NASA's Curious Universe | National Aeronautics and Space Administration (NASA) | |
| 38 | 7 |  | Something You Should Know | Mike Carruthers | OmniCast Media | |
| 39 | 158 |  | Believing the Bizarre: Paranormal Podcast | Tyler and Charlie | |
| 40 | — | T | The We Society | AcSS | |
| 41 | — |  | ExtinctZoo | ExtinctZoo | |
| 42 | — |  | Planetary Radio: Space Exploration, Astronomy and Science | The Planetary Society | |
| 43 | — | P | Psychotherapy and Applied Psychology | Dr. Daniel W Cox | |
| 44 | 21 |  | Sasquatch Chronicles | Sasquatch Chronicles - Bigfoot Encounters | |
| 45 | — |  | Astrum Space | Astrum | |
| 46 | — | S | Sci Guys | The Sci Guys | |
| 47 | — | E | Endocrine Feedback Loop | Endocrine Society | |
| 48 | — | I | International Law | Yale Law School | |
| 49 | 13 |  | You Are Not So Smart | You Are Not So Smart | |
| 50 | 3 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 51 | 31 |  | This Week in Neuroscience | Vincent Racaniello | |
| 52 | 86 |  | Short Wave | NPR | |
| 53 | 35 | S | Students of Surgery | Martin Brand | |
| 54 | 29 |  | BirdNote Daily | BirdNote | |
| 55 | 31 |  | New Books in Psychoanalysis | Marshall Poe | |
| 56 | 30 |  | SAPIENS: A Podcast for Everything Human | SAPIENS | |
| 57 | 55 |  | The Green Room: A Podcast from Obstetrics & Gynecology | Obstetrics & Gynecology (Green Journal) | |
| 58 | 36 | W | Whales | Quiet. Please | |
| 59 | 59 |  | Therapist Uncensored Podcast | Sue Marriott LCSW, CGP & Ann Kelley PhD | |
| 60 | 10 |  | Ancient Aliens | PodcastOne | |
| 61 | — |  | SciShow Tangents | Complexly | |
| 62 | 7 |  | The Science of Everything Podcast | James Fodor | |
| 63 | 30 | B | BJA: British Journal of Anaesthesia | Rik Thomas, Podcast Editor | |
| 64 | 36 |  | Nature Podcast | Springer Nature Limited | |
| 65 | 33 |  | Get Out Alive | Ashley Bray | |
| 66 | 36 |  | WEAPONIZED with Jeremy Corbell & George Knapp | Jeremy Corbell and George Knapp | |
| 67 | — |  | American Innovations | Audible | |
| 68 | 25 |  | The Origins Podcast with Lawrence Krauss | Lawrence M. Krauss | |
| 69 | 35 |  | CREOGs Over Coffee | CREOGs Over Coffee | |
| 70 | 35 |  | Overheard at National Geographic | National Geographic | |
| 71 | 34 |  | Living Planet | DW | |
| 72 | — | P | Plane Crash Diaries | Desmond Latham | |
| 73 | 16 |  | Tooth & Claw: True Stories of Animal Attacks | Wes Larson, Jeff Larson, Mike Smith | Daylight Media | |
| 74 | 23 | T | The Germs and Jargon Podcast | Dr. Mark Miller and Mr. Jonathan Hope | |
| 75 | 35 |  | Mongabay Newscast | Mongabay.com | |
| 76 | 37 | F | Farming Today | BBC Radio 4 | |
| 77 | 39 |  | The Wild with Chris Morgan | KUOW News and Information | |
| 78 | 36 | P | Psychology in 10 Minutes | David B. Feldman - psychology | social science | politics | mental health | |
| 79 | 34 |  | TED Talks Science and Medicine | TED | |
| 80 | 34 |  | All Creatures Podcast | All Creatures Podcast | |
| 81 | 20 |  | The Orthobullets Podcast | Orthobullets | |
| 82 | 10 |  | Science Friday | Science Friday and WNYC Studios | |
| 83 | 35 |  | Lost Women of Science | Lost Women of Science | |
| 84 | 35 | U | Under the Cortex | psychologicalscience | |
| 85 | 35 | E | Everything is Public Health | MJ and Cass | |
| 86 | 34 | T | To the Point | Modern Optometry | |
| 87 | 34 |  | DNA Today: A Genetics Podcast | Kira Dineen, Gene Pool Media | |
| 88 | 30 |  | The Joy of Why | Steven Strogatz, Janna Levin and Quanta Magazine | |
| 89 | 33 |  | Houston We Have a Podcast | National Aeronautics and Space Administration (NASA) | |
| 90 | 31 |  | Inner Cosmos with David Eagleman | iHeartPodcasts | |
| 91 | 16 |  | Ask the Naked Scientists | Dr Chris Smith | |
| 92 | 13 |  | Stuff To Blow Your Mind | iHeartPodcasts | |
| 93 | 2 |  | Relebogile Mabotja hosts The Naked Scientist | Radio 702 | |
| 94 | — |  | Mysterious Radio: Paranormal, UFO and Lore Interviews | Podcast Audio House | |
| 95 | 35 |  | The Medbullets Step 1 Podcast | Medbullets | |
| 96 | 34 | B | BJA Education Podcasts | BJA Education | |
| 97 | 20 |  | Stanford Psychology Podcast | Stanford Psychology | |
| 98 | 32 |  | Science Rules! with Bill Nye | Stitcher & Bill Nye | |
| 99 | 31 |  | The Medbullets Step 2 & 3 Podcast | Medbullets | |
| 100 | 28 |  | Biotech Hangout | Daphne Zohar, Josh Schimmer, Brad Loncar, Tim Opler & more | |
