| 1 | — |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 2 | 1 |  | More or Less | BBC Radio 4 | |
| 3 | 7 |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 4 | — |  | Curious Cases | BBC Radio 4 | |
| 5 | 3 |  | BBC Inside Science | BBC Radio 4 | |
| 6 | 13 | I | In Your Nature | By BirdWatch Ireland | |
| 7 | 5 |  | StarTalk Radio | Neil deGrasse Tyson | |
| 8 | 7 |  | Ologies with Alie Ward | Alie Ward | |
| 9 | 3 | S | Show Me the Science with Luke O'Neill | Newstalk | |
| 10 | 3 | F | Futureproof with Jonathan McCrea | Newstalk | |
| 11 | 4 |  | Making Sense with Sam Harris | Sam Harris | |
| 12 | 9 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 13 | 1 |  | The Life Scientific | BBC Radio 4 | |
| 14 | 4 |  | The Plodcast | Our Media | |
| 15 | 10 | C | CountryWide | RTÉ Radio 1 | |
| 16 | 8 |  | The world, the universe and us | New Scientist | |
| 17 | 8 |  | Radiolab | WNYC Studios | |
| 18 | 7 |  | Science Weekly | The Guardian | |
| 19 | 18 |  | Safer Chemicals Podcast | European Chemicals Agency | |
| 20 | 21 |  | Invisibilia | NPR | |
| 21 | 23 |  | Science Vs | Spotify Studios | |
| 22 | 9 |  | People Who Read People: A Behavior and Psychology Podcast | Zachary Elwood | |
| 23 | 11 | M | Mooney Goes Wild | RTÉ Radio 1 | |
| 24 | 164 | W | Wild Tales | Nature Podcast | National Trust | |
| 25 | — | S | SCOPS Podcast | Sustainable Control of Parasites in Sheep (SCOPS) | |
| 26 | — |  | TheThinkingAtheist | The Thinking Atheist | |
| 27 | — |  | Tooth & Claw: True Stories of Animal Attacks | Wes Larson, Jeff Larson, Mike Smith | Daylight Media | |
| 28 | — |  | Das Wissen | SWR | SWR | |
| 29 | 158 | L | Living Room Logic – Irish Science Podcast | Andrew McGovern and Aidan Long | |
| 30 | — | M | Me & Paranormal You | Ryan Singer | |
| 31 | — |  | ABA Inside Track | ABA Inside Track | |
| 32 | — | C | City Centric Podcast | City Centric | |
| 33 | — |  | Bite Back with Abbey Sharp | Abbey Sharp / Frequency Podcast Network | |
| 34 | — |  | Birds of a Feather Talk Together | John Bates, Shannon Hackett, RJ Pole, Amanda Marquart | |
| 35 | — | " | "Let's Talk Better Forestry" with Forest Policy Group | Sharon Smith | |
| 36 | 20 | C | Changing Minds with Owen Fitzpatrick | Owen Fitzpatrick | |
| 37 | 20 |  | Uncharted with Hannah Fry | BBC Radio 4 | |
| 38 | 11 |  | Discovery | BBC World Service | |
| 39 | 17 |  | This Podcast Will Kill You | Exactly Right and iHeartPodcasts | |
| 40 | 20 |  | Slow Radio | BBC Radio 3 | |
| 41 | 12 |  | The Joy of Why | Steven Strogatz, Janna Levin and Quanta Magazine | |
| 42 | 16 |  | Therapist Uncensored Podcast | Sue Marriott LCSW, CGP & Ann Kelley PhD | |
| 43 | 18 | N | Naturefile | RTÉ lyric fm | |
| 44 | 21 |  | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 45 | 3 |  | Theories of Everything with Curt Jaimungal | Theories of Everything | |
| 46 | — |  | Inner Cosmos with David Eagleman | iHeartPodcasts | |
| 47 | 19 |  | All In The Mind | ABC | |
| 48 | 18 | N | New Scientist Weekly | New Scientist | |
| 49 | 17 | B | Boring History for Sleep | Velvet | |
| 50 | 7 |  | CrowdScience | BBC World Service | |
| 51 | 97 |  | SpaceTime with Stuart Gary | Stuart Gary | |
| 52 | 128 |  | TED Talks Science and Medicine | TED | |
| 53 | 20 |  | Daniel and Jorge Explain the Universe | iHeartPodcasts | |
| 54 | — |  | Professor Brian Cox Live Q and A Podcast | The Cosmic Shambles Network | |
| 55 | 21 | V | Vozes do Planeta | Vozes do Planeta Podcast | |
| 56 | 21 |  | Brain Science with Ginger Campbell, MD: Neuroscience for Everyone | Ginger Campbell, MD | |
| 57 | 21 | C | Call Of The Wild | WWF | |
| 58 | 20 | W | W Stronę Długowieczności | Krzysztof Łoniewski i prof. Marek Postuła | |
| 59 | — | V | Viking Age Environments | Rebecca Boyd | |
| 60 | 21 | F | Flora and Friends - Your botanical cup of tea | Judith Lundberg-Felten | |
| 61 | 21 |  | Crash Course Pods: The Universe | Crash Course Pods, Complexly | |
| 62 | 12 |  | Houston We Have a Podcast | National Aeronautics and Space Administration (NASA) | |
| 63 | 12 |  | Scotland Outdoors | BBC Radio Scotland | |
| 64 | 18 |  | New Books in Critical Theory | Marshall Poe | |
| 65 | 20 |  | Stanford Psychology Podcast | Stanford Psychology | |
| 66 | 18 |  | Ancient Aliens | PodcastOne | |
| 67 | 20 |  | Psychiatry & Psychotherapy Podcast | David Puder, M.D. | |
| 68 | 19 | T | The Dairy Trail | Agriland Media | |
| 69 | 17 |  | The Supermassive Podcast | The Royal Astronomical Society | |
| 70 | 15 | C | Climate Change for Beginners | Dr. Ciaran O'Carroll | |
| 71 | 14 |  | Sasquatch Chronicles | Sasquatch Chronicles - Bigfoot Encounters | |
| 72 | 18 |  | The Hamilton Morris Podcast | Hamilton Morris | |
| 73 | 20 |  | 5 Live Science Podcast | BBC Radio 5 Live | |
| 74 | 13 | C | Circulation: Arrhythmia and Electrophysiology On the Beat | Paul J. Wang, MD | |
| 75 | 19 | W | What The Duck?! | ABC | |
| 76 | 18 | C | Costing the Earth | BBC Radio 4 | |
| 77 | 18 |  | Speed & Scale | TED | |
| 78 | 18 | H | Here We Are | Shane Mauss | |
| 79 | 10 |  | The Climate Question | BBC World Service | |
| 80 | 16 | B | Bird Songs with Seán Ronayne | RTÉ lyric fm | |
| 81 | 16 |  | Mythfits | Pionaire Podcasting | |
| 82 | 11 |  | Astrum Space | Astrum | |
| 83 | 21 |  | Science In Action | BBC World Service | |
| 84 | 21 |  | Mysterious Universe | 8th Kind | |
| 85 | 30 |  | Unexplainable | Vox | |
| 86 | 18 | T | The Function Room | GoLoud | |
| 87 | 13 |  | Bigfoot Society | Jeremiah Byron | |
| 88 | 22 |  | WEAPONIZED with Jeremy Corbell & George Knapp | Jeremy Corbell and George Knapp | |
| 89 | 20 |  | Cool Worlds Podcast | coolworldslab | |
| 90 | 19 |  | That UFO Podcast | That UFO Podcast | |
| 91 | 24 |  | The Naked Scientists Podcast | The Naked Scientists | |
| 92 | 5 |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 93 | 23 | P | PEP talks - Pharmaceutical Expert Podcast | Körber Pharma | |
| 94 | 15 |  | Unexpected Elements | BBC World Service | |
| 95 | 12 |  | The Common Descent Podcast | Common Descent | |
| 96 | 6 | F | Farming Today | BBC Radio 4 | |
| 97 | 19 | L | Leaving Cert Biology Revision | Mr G. O'Donovan | |
| 98 | 15 |  | So Cultured Podcast | Liv Grant & Taz Shipley | |
| 99 | 24 |  | Navigating Neuropsychology | John Bellone & Ryan Van Patten - NavNeuro | |
| 100 | 28 | C | Conversations in Drug Development | Boyds | |
