| 1 | 3 |  | Ologies with Alie Ward | Alie Ward | |
| 2 | 1 |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 3 | 2 |  | Science Weekly | The Guardian | |
| 4 | 2 |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 5 | 1 |  | Radiolab | WNYC Studios | |
| 6 | 1 |  | Making Sense with Sam Harris | Sam Harris | |
| 7 | 4 |  | Curious Cases | BBC Radio 4 | |
| 8 | 8 |  | StarTalk Radio | Neil deGrasse Tyson | |
| 9 | 2 |  | BBC Inside Science | BBC Radio 4 | |
| 10 | 2 | F | Futureproof with Jonathan McCrea | Newstalk | |
| 11 | 4 |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 12 | 46 |  | The Quanta Podcast | Quanta Magazine | |
| 13 | 1 |  | More or Less | BBC Radio 4 | |
| 14 | 84 |  | The world, the universe and us | New Scientist | |
| 15 | 2 |  | WEAPONIZED with Jeremy Corbell & George Knapp | Jeremy Corbell and George Knapp | |
| 16 | — | E | Ecolution | RTÉ Kids | |
| 17 | 8 |  | The Couples Therapist Couch | Shane Birkel | |
| 18 | 5 |  | The Origins Podcast with Lawrence Krauss | Lawrence M. Krauss | |
| 19 | 9 |  | Reinvent Yourself with Dr. Tara | Dr. Tara Swart Bieber | |
| 20 | 9 |  | NASA's Curious Universe | National Aeronautics and Space Administration (NASA) | |
| 21 | 24 |  | The Naked Scientists Podcast | The Naked Scientists | |
| 22 | 4 | S | Show Me the Science with Luke O'Neill | Newstalk | |
| 23 | 11 |  | Speaking of Psychology | American Psychological Association | |
| 24 | 6 |  | That UFO Podcast | That UFO Podcast | |
| 25 | 86 |  | Overheard at National Geographic | National Geographic | |
| 26 | 4 |  | This Podcast Will Kill You | Exactly Right and iHeartPodcasts | |
| 27 | 10 | L | Leaving Cert Biology Revision | Mr G. O'Donovan | |
| 28 | — | M | Mooney Goes Wild | RTÉ Radio 1 | |
| 29 | 8 |  | Uncharted with Hannah Fry | BBC Radio 4 | |
| 30 | 18 |  | Discovery | BBC World Service | |
| 31 | 24 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 32 | 17 |  | CrowdScience | BBC World Service | |
| 33 | 161 |  | Inner Cosmos with David Eagleman | iHeartPodcasts | |
| 34 | 98 |  | Science & Futurism with Isaac Arthur | Isaac Arthur | |
| 35 | 127 | N | New Scientist Weekly | New Scientist | |
| 36 | 153 |  | You Are Not So Smart | You Are Not So Smart | |
| 37 | — | B | Beyond Compliance: In Conversation | Beyond Compliance | |
| 38 | — |  | Casual Inference | Lucy D'Agostino McGowan and Ellie Murray | |
| 39 | — |  | Quirks and Quarks | CBC | |
| 40 | — |  | The Orthobullets Podcast | Orthobullets | |
| 41 | — |  | The Science of Happiness | PRX and Greater Good Science Center | |
| 42 | — | F | Feet on the Soil | Soil Boy | |
| 43 | — | T | Talking Humanitarianism | Norwegian Centre for Humanitarian Studies | |
| 44 | — |  | New Books in Critical Theory | Marshall Poe | |
| 45 | — | B | Bad Zoology | Bad Zoology | |
| 46 | — |  | The Joy of Why | Steven Strogatz, Janna Levin and Quanta Magazine | |
| 47 | — | S | Science Маянс Podcast | Podcast Solutions Studio | |
| 48 | — |  | The Clean Energy Revolution | National Grid | |
| 49 | — | N | National Geographic Magazine | Radio Eye | |
| 50 | — | T | This Wild Life Conservation Podcast | Amy Turner | |
| 51 | — |  | Altered States | PRX | |
| 52 | — | S | Specimens | Elle Kaye | |
| 53 | — | C | CrowdScience | BBC World Service | |
| 54 | 35 | T | The Artificial Human | BBC Radio 4 | |
| 55 | 35 |  | Naturebang | BBC Radio 4 | |
| 56 | 32 |  | Space Nuts: Astronomy Insights & Cosmic Discoveries | Professor Fred Watson and Andrew Dunkley | |
| 57 | 15 |  | Stuff To Blow Your Mind | iHeartPodcasts | |
| 58 | 33 |  | Why Do We Do That? | BBC Radio 4 | |
| 59 | 7 |  | Universe Today Podcast | Fraser Cain | |
| 60 | 30 |  | Crash Course Pods: The Universe | Crash Course Pods, Complexly | |
| 61 | 30 |  | SciShow Tangents | Complexly | |
| 62 | 35 |  | Accidental Gods | Accidental Gods | |
| 63 | 31 |  | A Life More Wild | Canopy & Stars | |
| 64 | 31 |  | Great Mysteries of Physics | The Conversation | |
| 65 | 28 |  | Unravelling the Universe℠ | Ben (host) and Harmonie (behind the scenes) | |
| 66 | 27 |  | Ciência Suja | Ciência Suja | |
| 67 | 29 |  | Night Science | Itai Yanai & Martin Lercher | |
| 68 | 26 |  | The Weirdest Thing I Learned This Week | Popular Science | |
| 69 | 23 |  | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 70 | 27 |  | Bite Back with Abbey Sharp | Abbey Sharp / Frequency Podcast Network | |
| 71 | 37 | C | Changing Minds with Owen Fitzpatrick | Owen Fitzpatrick | |
| 72 | 36 | A | Air Quality Matters | Simon Jones | |
| 73 | 33 | O | Our Sustainable Village | RTÉ Kids | |
| 74 | 33 | T | The Death Studies Podcast | The Death Studies Podcast | |
| 75 | 31 | T | The Sociology Show | Matthew Wilkin | |
| 76 | 26 |  | UAP Unidentified Alien Podcast | Gamut Podcast Network | |
| 77 | 42 | C | CountryWide | RTÉ Radio 1 | |
| 78 | 4 |  | The Supermassive Podcast | The Royal Astronomical Society | |
| 79 | 32 | W | Why? with Emma Kennedy | Podmasters | |
| 80 | 20 |  | Sasquatch Chronicles | Sasquatch Chronicles - Bigfoot Encounters | |
| 81 | 30 |  | Short Wave | NPR | |
| 82 | 3 |  | Bigfoot Society | Jeremiah Byron | |
| 83 | 29 |  | Manifold | Steve Hsu | |
| 84 | 23 |  | Paranormal Portal | Brent Thomas | |
| 85 | 32 | T | The Best of Making Sense with Sam Harris | Sam Harris | |
| 86 | 12 |  | Psychiatry & Psychotherapy Podcast | David Puder, M.D. | |
| 87 | 15 |  | Science Vs | Spotify Studios | |
| 88 | 31 |  | Paranormal Mysteries | Nic Ryan | Paranormal Mysteries Podcast | |
| 89 | 13 |  | Daniel and Kelly’s Extraordinary Universe | iHeartPodcasts | |
| 90 | 34 | T | The GOSH Paediatrics Bioethics Podcast | GOSH Learning Academy | |
| 91 | 32 |  | Robinson's Podcast | Robinson Erhardt | |
| 92 | 17 | F | Farming Today | BBC Radio 4 | |
| 93 | 16 |  | Science In Action | BBC World Service | |
| 94 | 33 |  | Stanford Psychology Podcast | Stanford Psychology | |
| 95 | 33 |  | The Episodic Table of Elements | T. R. Appleton | |
| 96 | 32 | T | Trials with Maya Z | Maya Zlatanova | |
| 97 | 32 |  | Origin Stories | The Leakey Foundation | |
| 98 | 32 | B | Bioethics on Air | National Catholic Bioethics Center | |
| 99 | 32 | T | The Ethics Round | NIHR Biomedical Research Centre, Southampton | |
| 100 | 32 | R | Research Ethics Reimagined | PRIM&R | |
