| 1 | — |  | The Rest Is Science | Goalhanger | |
| 2 | — |  | More or Less | BBC Radio 4 | |
| 3 | — |  | Get Birding | Peanut & Crumb | |
| 4 | — |  | Radiolab | WNYC Studios | |
| 5 | 8 |  | StarTalk Radio | Neil deGrasse Tyson | |
| 6 | 1 | S | Show Me the Science with Luke O'Neill | Newstalk | |
| 7 | — | B | Boring History for Sleep | Velvet | |
| 8 | 2 |  | Science Weekly | The Guardian | |
| 9 | 5 |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 10 | 11 | F | Futureproof with Jonathan McCrea | Newstalk | |
| 11 | 5 |  | Ologies with Alie Ward | Alie Ward | |
| 12 | — |  | Curious Cases | BBC Radio 4 | |
| 13 | 16 |  | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 14 | 5 |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 15 | 1 | C | CountryWide | RTÉ Radio 1 | |
| 16 | 2 | M | Mooney Goes Wild | RTÉ Radio 1 | |
| 17 | 9 |  | Making Sense with Sam Harris | Sam Harris | |
| 18 | 3 |  | BBC Inside Science | BBC Radio 4 | |
| 19 | 8 |  | The world, the universe and us | New Scientist | |
| 20 | 3 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 21 | 1 |  | Astrum Space | Astrum | |
| 22 | 2 |  | Nature Podcast | Springer Nature Limited | |
| 23 | 4 |  | Science Vs | Spotify Studios | |
| 24 | 45 |  | The Naked Scientists Podcast | The Naked Scientists | |
| 25 | 8 |  | Discovery | BBC World Service | |
| 26 | 13 |  | All In The Mind | ABC | |
| 27 | 24 |  | Mysterious Universe | 8th Kind | |
| 28 | 24 |  | Uncharted with Hannah Fry | BBC Radio 4 | |
| 29 | 3 |  | CrowdScience | BBC World Service | |
| 30 | 63 | F | Farming Today | BBC Radio 4 | |
| 31 | 26 |  | The Astrophysics Podcast | Paul Duffell | |
| 32 | 8 | I | In Your Nature | By BirdWatch Ireland | |
| 33 | 40 |  | Unexpected Elements | BBC World Service | |
| 34 | 10 |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 35 | — |  | Sasquatch Chronicles | Sasquatch Chronicles - Bigfoot Encounters | |
| 36 | 62 |  | Scotland Outdoors | BBC Radio Scotland | |
| 37 | 19 |  | Daniel and Kelly’s Extraordinary Universe | iHeartPodcasts | |
| 38 | 4 |  | Psychiatry & Psychotherapy Podcast | David Puder, M.D. | |
| 39 | 105 |  | Science Magazine Podcast | Science Magazine | |
| 40 | 93 |  | Outrage + Optimism: The Climate Podcast | Persephonica and Global Optimism | |
| 41 | 4 |  | Google DeepMind: The Podcast | Hannah Fry | |
| 42 | 59 |  | Naturebang | BBC Radio 4 | |
| 43 | 126 |  | Das Wissen | SWR | SWR | |
| 44 | — | A | AgriFood Matters | UCD School of Agriculture and Food Science | |
| 45 | 139 |  | Overheard at National Geographic | National Geographic | |
| 46 | 23 |  | The Catholic Guide to Sustainable Living | Ave Maria University | |
| 47 | 43 | C | Chris Skinner's Countryside Podcasts | High Ash Farm | |
| 48 | 10 |  | The Life Scientific | BBC Radio 4 | |
| 49 | 140 |  | Leaked | TFLabs | |
| 50 | — | W | Wild Lives | Our Media | |
| 51 | 21 |  | The Psychology Podcast | iHeartPodcasts | |
| 52 | 112 |  | Horizonte – Iker Jiménez | Mediaset | |
| 53 | — |  | The Hamilton Morris Podcast | Hamilton Morris | |
| 54 | — | A | A Neuroscientist Explains | The Guardian | |
| 55 | 5 |  | That UFO Podcast | That UFO Podcast | |
| 56 | — | E | Ecolution | RTÉ Kids | |
| 57 | — | T | The Science of Psychotherapy | Dahlitz Media | |
| 58 | — | Á | Ático Primera con Laia Castel | laiascastel | |
| 59 | — | T | The Nature of Things | RTÉ Radio 1 | |
| 60 | — | W | What The Duck?! | ABC | |
| 61 | — | W | Wissenschaft im Brennpunkt | Deutschlandfunk | |
| 62 | — |  | The Gene Gap: Common threads | The Guardian | |
| 63 | 7 |  | Planetary Radio: Space Exploration, Astronomy and Science | The Planetary Society | |
| 64 | 12 |  | Geology Bites | Oliver Strimpel | |
| 65 | 10 |  | Stuff To Blow Your Mind | iHeartPodcasts | |
| 66 | 38 |  | Origin Stories | The Leakey Foundation | |
| 67 | 42 |  | I Know Dino: The Big Dinosaur Podcast | I KNOW DINO, LLC | |
| 68 | 34 |  | Short Wave | NPR | |
| 69 | 33 |  | Universe Today Podcast | Fraser Cain | |
| 70 | 9 |  | Ask the Naked Scientists | Dr Chris Smith | |
| 71 | 44 | S | Sociology Ruins Everything | Matt Sedlar | |
| 72 | 99 |  | Main Engine Cut Off | Anthony Colangelo | |
| 73 | 45 |  | Something You Should Know | Mike Carruthers | OmniCast Media | |
| 74 | 43 |  | Babbage from The Economist | The Economist | |
| 75 | 8 |  | DarkHorse Podcast | Bret Weinstein & Heather Heying | |
| 76 | — | D | De Universiteit van Vlaanderen Podcast | Universiteit van Vlaanderen | |
| 77 | — |  | Science In Action | BBC World Service | |
| 78 | 46 |  | The Origins Podcast with Lawrence Krauss | Lawrence M. Krauss | |
| 79 | 25 | S | Space | BBC World Service | |
| 80 | 51 |  | This Podcast Will Kill You | Exactly Right and iHeartPodcasts | |
| 81 | 45 |  | Why This Universe? | Dan Hooper, Shalma Wegsman | |
| 82 | 36 | T | The Climate Ambassador Podcast | The Climate Ambassador Podcast | |
| 83 | 23 |  | The Michael Shermer Show | Michael Shermer | |
| 84 | 43 |  | Operation Night Cat | New Hampshire Public Radio | |
| 85 | — |  | Win-Win with Liv Boeree | Liv Boeree | |
| 86 | 27 | C | Conservation and Science | Tommy's Outdoors | |
| 87 | 30 |  | The Grave Talks | Haunted, Paranormal & Supernatural | Ghost Stores, Haunted, Paranormal & Supernatural Stories | |
| 88 | 39 |  | Deep Dive: Space Mysteries Unveiled | Graviton Space Facts | |
| 89 | — | T | The Immaculate Deception | Somethin' Else / Sony Music Entertainment | |
| 90 | 47 |  | Re:Energise from ESB | ESB | |
| 91 | 47 |  | Planet Visionaries – SEASON 5 | A podcast in partnership with The Rolex Perpetual Planet Initiative | |
| 92 | 47 | F | Farm Small Farm Smart Daily | The Modern Grower Podcast Network | |
| 93 | 46 | T | The Nucleus | Regeneron | |
| 94 | 46 | E | En Teoría | En Teoría | |
| 95 | 27 |  | Accidental Gods | Accidental Gods | |
| 96 | 15 |  | Ask a Spaceman! | Paul M. Sutter | |
| 97 | 32 |  | The Supermassive Podcast | The Royal Astronomical Society | |
| 98 | 29 |  | Mysterious Radio: Paranormal, UFO and Lore Interviews | Podcast Audio House | |
| 99 | 7 |  | Earthfiles Podcast with Linda Moulton Howe | Linda Moulton Howe | |
| 100 | 36 |  | Instant Genius | Our Media | |
