| 1 | — | B | Bird Songs with Seán Ronayne | RTÉ lyric fm | |
| 2 | — |  | Science Weekly | The Guardian | |
| 3 | 2 |  | Making Sense with Sam Harris | Sam Harris | |
| 4 | — |  | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 5 | 1 | S | Show Me the Science with Luke O'Neill | Newstalk | |
| 6 | 1 |  | Curious Cases | BBC Radio 4 | |
| 7 | 23 |  | BBC Inside Science | BBC Radio 4 | |
| 8 | 2 |  | More or Less | BBC Radio 4 | |
| 9 | 6 |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 10 | 4 |  | StarTalk Radio | Neil deGrasse Tyson | |
| 11 | 36 |  | Science Vs | Spotify Studios | |
| 12 | 4 | M | Mooney Goes Wild | RTÉ Radio 1 | |
| 13 | 1 |  | Radiolab | WNYC Studios | |
| 14 | 50 |  | Stanford Psychology Podcast | Stanford Psychology | |
| 15 | 3 |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 16 | 7 |  | Unexplainable | Vox | |
| 17 | 9 | N | Naturefile | RTÉ lyric fm | |
| 18 | — | C | Classroom Psychology | Cora Sargeant | |
| 19 | 8 |  | Uncharted with Hannah Fry | BBC Radio 4 | |
| 20 | 11 |  | Reinvent Yourself with Dr. Tara | Dr. Tara Swart Bieber | |
| 21 | 12 |  | WEAPONIZED with Jeremy Corbell & George Knapp | Jeremy Corbell and George Knapp | |
| 22 | 7 |  | Ologies with Alie Ward | Alie Ward | |
| 23 | 10 |  | Overheard at National Geographic | National Geographic | |
| 24 | 45 |  | People Who Read People: A Behavior and Psychology Podcast | Zachary Elwood | |
| 25 | 55 |  | Accidental Gods | Accidental Gods | |
| 26 | 7 |  | This Podcast Will Kill You | Exactly Right and iHeartPodcasts | |
| 27 | 7 |  | CrowdScience | BBC World Service | |
| 28 | 11 |  | Discovery | BBC World Service | |
| 29 | 118 |  | Professor Brian Cox Live Q and A Podcast | The Cosmic Shambles Network | |
| 30 | 6 |  | The Naked Scientists Podcast | The Naked Scientists | |
| 31 | 144 |  | Podcast UFO | Martin Willis | |
| 32 | 9 |  | The world, the universe and us | New Scientist | |
| 33 | — | G | Grow the future | Yara Agronomy Team | |
| 34 | — |  | The Bulletproof Musician | Noa Kageyama | |
| 35 | 14 | C | CountryWide | RTÉ Radio 1 | |
| 36 | — | Y | Yara's Crop Nutrition podcast | Yara | |
| 37 | — |  | Psychoanalysis & You | APsA American Psychoanalytic Association | |
| 38 | 12 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 39 | 12 |  | Unexpected Elements | BBC World Service | |
| 40 | 11 | F | Futureproof with Jonathan McCrea | Newstalk | |
| 41 | 16 | I | In Your Nature | By BirdWatch Ireland | |
| 42 | 14 |  | Naturebang | BBC Radio 4 | |
| 43 | 9 |  | Short Wave | NPR | |
| 44 | 12 | ![Cosmosis [Formerly The UFO Rabbit Hole]](https://is1-ssl.mzstatic.com/image/thumb/Podcasts211/v4/6e/50/4f/6e504f3a-5967-0f9a-1858-77a5f070b7d4/mza_10360255510263335732.jpeg/100x100bb.jpg) | Cosmosis [Formerly The UFO Rabbit Hole] | Kelly Chase & Jay Christopher King | |
| 45 | 10 | T | The Signpost Series | Teagasc | |
| 46 | 33 |  | The Psychology Podcast | iHeartPodcasts | |
| 47 | 10 |  | NASA's Curious Universe | National Aeronautics and Space Administration (NASA) | |
| 48 | 12 |  | Science Magazine Podcast | Science Magazine | |
| 49 | 1 |  | Paranormal Mysteries | Nic Ryan | Paranormal Mysteries Podcast | |
| 50 | 12 |  | Alien Encounters | Science Channel | |
| 51 | 11 | T | Tomorrow’s World | BBC Radio | |
| 52 | 13 |  | Houston We Have a Podcast | National Aeronautics and Space Administration (NASA) | |
| 53 | 12 |  | Terrible Lizards | Iszi Lawrence and David Hone | |
| 54 | 12 | B | Best Medicine | BBC Radio 4 | |
| 55 | 12 | A | About Learning | Stan Pinsent | |
| 56 | 12 | S | Science News Daily | brief.news | |
| 57 | 12 | L | Leaving Cert Biology Revision | Mr G. O'Donovan | |
| 58 | 5 |  | That UFO Podcast | That UFO Podcast | |
| 59 | 13 |  | Outrage + Optimism: The Climate Podcast | Persephonica and Global Optimism | |
| 60 | 11 |  | ZEIT WISSEN. Woher weißt Du das? | DIE ZEIT | |
| 61 | 10 |  | The Great Simplification with Nate Hagens | Nate Hagens | |
| 62 | 12 | T | The Artificial Human | BBC Radio 4 | |
| 63 | 22 |  | Science In Action | BBC World Service | |
| 64 | 8 |  | Stuff To Blow Your Mind | iHeartPodcasts | |
| 65 | 37 |  | Sasquatch Chronicles | Sasquatch Chronicles - Bigfoot Encounters | |
| 66 | 14 |  | The Deep End | Science News | |
| 67 | 39 |  | The Supermassive Podcast | The Royal Astronomical Society | |
| 68 | 14 |  | Psychiatry & Psychotherapy Podcast | David Puder, M.D. | |
| 69 | 12 | T | The Dental Guys | The Dental Guys | |
| 70 | 15 |  | In Defense of Plants Podcast | In Defense of Plants | |
| 71 | 49 |  | Something You Should Know | Mike Carruthers | OmniCast Media | |
| 72 | 12 |  | All In The Mind | ABC | |
| 73 | 12 |  | Ciência Suja | Ciência Suja | |
| 74 | 16 |  | Curiosity Weekly | Discovery | |
| 75 | 16 | F | Futureproof Gold | Newstalk | |
| 76 | 14 |  | Need To Know | Bryce Zabel | |
| 77 | 14 |  | 5 Live Science Podcast | BBC Radio 5 Live | |
| 78 | 13 |  | Because Language - a podcast about linguistics, the science of language. | Daniel Midgley, Ben Ainslie, and Hedvig Skirgård | |
| 79 | 13 | N | Nature News from RSPB Scotland | RSPB Scotland | |
| 80 | 13 | T | The Science of Psychotherapy | Dahlitz Media | |
| 81 | 13 | T | Tracking Traits | Penn State's Center for Human Evolution and Diversity | |
| 82 | 12 |  | Drilled | Pushkin Industries | |
| 83 | 12 | D | Discovering Us | The Leakey Foundation | |
| 84 | 12 | T | The MOFcast | Ocean Cheung | |
| 85 | 12 |  | Energy Switch | Switch Energy Alliance | |
| 86 | 12 |  | Ireland's Landscape Histories and Futures | Stephanie O'Rourke | |
| 87 | 12 |  | Speaking of Psychology | American Psychological Association | |
| 88 | 12 |  | The Life Scientific | BBC Radio 4 | |
| 89 | 12 |  | Your Brain On | Drs. Ayesha and Dean Sherzai | |
| 90 | 14 |  | Scotland Outdoors | BBC Radio Scotland | |
| 91 | 8 |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 92 | 9 |  | Universe Today Podcast | Fraser Cain | |
| 93 | 15 |  | The Michael Shermer Show | Michael Shermer | |
| 94 | 13 |  | Robinson's Podcast | Robinson Erhardt | |
| 95 | 10 |  | Science Friday | Science Friday and WNYC Studios | |
| 96 | 19 |  | Daniel and Kelly’s Extraordinary Universe | iHeartPodcasts | |
| 97 | 6 | F | Farming Today | BBC Radio 4 | |
| 98 | 14 |  | Earthfiles Podcast with Linda Moulton Howe | Linda Moulton Howe | |
| 99 | 17 |  | Why Do We Do That? | BBC Radio 4 | |
| 100 | 69 |  | Dr Karl Podcast | triplej | |
