| 1 | — |  | Instant Genius | Our Media | |
| 2 | 59 |  | BBC Inside Science | BBC Radio 4 | |
| 3 | 117 |  | Robinson's Podcast | Robinson Erhardt | |
| 4 | 37 |  | Discovery | BBC World Service | |
| 5 | — |  | The End Of The World with Josh Clark | iHeartPodcasts | |
| 6 | — |  | Skeptoid | Brian Dunning | |
| 7 | 5 |  | Making Sense with Sam Harris | Sam Harris | |
| 8 | 5 | T | The Best of Making Sense with Sam Harris | Sam Harris | |
| 9 | 5 |  | Psychiatry & Psychotherapy Podcast | David Puder, M.D. | |
| 10 | 5 |  | Scotland Outdoors | BBC Radio Scotland | |
| 11 | 5 | B | Best of Natural History Radio | BBC Radio 4 | |
| 12 | 5 | T | The Natural History Podcast | James Mills | |
| 13 | 5 |  | Radiolab | WNYC Studios | |
| 14 | 5 |  | Science Weekly | The Guardian | |
| 15 | 5 |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 16 | 22 | W | Waterlands | Wildfowl & Wetlands Trust | |
| 17 | 6 |  | Unexplainable | Vox | |
| 18 | 6 |  | Inner Cosmos with David Eagleman | iHeartPodcasts | |
| 19 | 2 | V | Von Ráðgjöf - Lausnin Hlaðvarp | Von ráðgjöf - Lausnin hlaðvarp | |
| 20 | 7 |  | Freakonomics, M.D. | Freakonomics Radio + Stitcher | |
| 21 | 63 |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 22 | 6 |  | This Podcast Will Kill You | Exactly Right and iHeartPodcasts | |
| 23 | 8 |  | More or Less | BBC Radio 4 | |
| 24 | — |  | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 25 | 42 | W | Wild Tales | Nature Podcast | National Trust | |
| 26 | 2 |  | Science Friday | Science Friday and WNYC Studios | |
| 27 | 13 |  | The Science of Birds | Ivan Phillipsen | |
| 28 | 5 |  | The Weirdest Thing I Learned This Week | Popular Science | |
| 29 | 39 |  | Into the Impossible With Brian Keating | Big Bang Productions Inc. | |
| 30 | 11 |  | StarTalk Radio | Neil deGrasse Tyson | |
| 31 | 13 |  | Mysterious Radio: Paranormal, UFO and Lore Interviews | Podcast Audio House | |
| 32 | 68 |  | The Grave Talks | Haunted, Paranormal & Supernatural | Ghost Stores, Haunted, Paranormal & Supernatural Stories | |
| 33 | 13 |  | Speaking of Psychology | American Psychological Association | |
| 34 | 9 |  | Stuff To Blow Your Mind | iHeartPodcasts | |
| 35 | 11 |  | Somewhere in the Skies | SpectreVision Radio | |
| 36 | 51 | D | Dagbók Urriða | Ólafur Guðbjartsson | |
| 37 | 3 |  | Curious Cases | BBC Radio 4 | |
| 38 | 96 |  | Sasquatch Chronicles | Sasquatch Chronicles - Bigfoot Encounters | |
| 39 | — |  | Tooth & Claw: True Stories of Animal Attacks | Wes Larson, Jeff Larson, Mike Smith | Daylight Media | |
| 40 | — |  | Eons: Surviving Deep Time | PBS | |
| 41 | 18 |  | Ologies with Alie Ward | Alie Ward | |
| 42 | 21 |  | Why Do We Do That? | BBC Radio 4 | |
| 43 | 40 |  | Crash Course Pods: The Universe | Crash Course Pods, Complexly | |
| 44 | 80 |  | Big Picture Science | Big Picture Science | |
| 45 | 99 |  | Safety Third | Safety Third | |
| 46 | 99 |  | Something You Should Know | Mike Carruthers | OmniCast Media | |
| 47 | — | S | Shirtloads of Science | Dr Karl Kruszelnicki | |
| 48 | 30 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 49 | 27 |  | A Life More Wild | Canopy & Stars | |
| 50 | 12 | 2 | 24/7 | Beggi Ólafs | |
| 51 | 79 |  | Videnskabeligt Udfordret | Mark Lyng, Flemming Damgaard, Nikolaj V. Hansen | |
| 52 | — |  | You Are Not So Smart | You Are Not So Smart | |
| 53 | 93 |  | Bigfoot and Beyond with Cliff and Bobo | Bigfoot and Beyond LLC | |
| 54 | 15 |  | Crazy Town | Post Carbon Institute | |
| 55 | 29 |  | Outrage + Optimism: The Climate Podcast | Persephonica and Global Optimism | |
| 56 | 24 |  | Mysterious Universe | 8th Kind | |
| 57 | — | D | Digging a Hole: The Legal Theory Podcast | Digging a Hole Podcast | |
| 58 | 14 |  | 5 Live Science Podcast | BBC Radio 5 Live | |
| 59 | — |  | SpaceTime with Stuart Gary | Stuart Gary | |
| 60 | 33 |  | Science Vs | Spotify Studios | |
| 61 | 2 |  | The Joy of Why | Steven Strogatz, Janna Levin and Quanta Magazine | |
| 62 | 17 |  | CrowdScience | BBC World Service | |
| 63 | 34 |  | The Hydrogen Podcast | Paul Rodden | |
| 64 | 34 |  | ScienceStuff | iHeartPodcasts | |
| 65 | 34 |  | Science In Action | BBC World Service | |
| 66 | 8 |  | Astrum Space | Astrum | |
| 67 | 34 | 超 | 超リアルな行動心理学 | FERMONDO | |
| 68 | 34 |  | New Books in Critical Theory | Marshall Poe | |
| 69 | 34 |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 70 | 127 |  | DarkHorse Podcast | Bret Weinstein & Heather Heying | |
| 71 | — |  | Clinician's Brief: The Podcast | Clinician's Brief | |
| 72 | — |  | The Long Run with Luke Timmerman | Timmerman Report | |
| 73 | 37 |  | Therapist Uncensored Podcast | Sue Marriott LCSW, CGP & Ann Kelley PhD | |
| 74 | 37 |  | UFO Chronicles Podcast | Nik Hunter | |
| 75 | 5 |  | Space Nuts: Astronomy Insights & Cosmic Discoveries | Professor Fred Watson and Andrew Dunkley | |
| 76 | 34 |  | Unexpected Elements | BBC World Service | |
| 77 | 35 |  | The Supermassive Podcast | The Royal Astronomical Society | |
| 78 | 35 |  | RumSnak | Tina Ibsen + Anders Høeg Nissen | |
| 79 | 32 | F | Farming Today | BBC Radio 4 | |
| 80 | 27 |  | Science Friction | ABC | |
| 81 | 33 |  | Theories of Everything with Curt Jaimungal | Theories of Everything | |
| 82 | 28 |  | Nature Podcast | Springer Nature Limited | |
| 83 | — |  | The 365 Days of Astronomy | 365DaysOfAstronomy.org | |
| 84 | 35 |  | The Michael Shermer Show | Michael Shermer | |
| 85 | 35 |  | Short Wave | NPR | |
| 86 | 35 |  | Daniel and Kelly’s Extraordinary Universe | iHeartPodcasts | |
| 87 | 1 |  | Astronomy Cast | Fraser Cain and Dr. Pamela Gay | |
| 88 | 33 | T | This Natural Life | BBC Radio 4 | |
| 89 | 33 |  | Naturebang | BBC Radio 4 | |
| 90 | 33 |  | The Plodcast | Our Media | |
| 91 | 33 |  | Physics World Weekly Podcast | Physics World | |
| 92 | 32 |  | Planetary Radio: Space Exploration, Astronomy and Science | The Planetary Society | |
| 93 | 29 |  | Ask a Spaceman! | Paul M. Sutter | |
| 94 | 29 | W | Wissenschaft im Brennpunkt | Deutschlandfunk | |
| 95 | 29 | W | Wilderness Medicine Podcast | Wilderness Medical Society | |
| 96 | 27 |  | Science Magazine Podcast | Science Magazine | |
| 97 | 26 |  | Skeptics with a K | Skeptic Media Limited | |
| 98 | 26 |  | That's Absurd Please Elaborate | Trace Elements Media | |
| 99 | 26 |  | Science Fictions | Tom Chivers and Stuart Ritchie | |
| 100 | 25 | T | The Falsifiable Podcast | Eric Denton | |
