| 1 | — |  | The Rest Is Science | Goalhanger | |
| 2 | — |  | More or Less | BBC Radio 4 | |
| 3 | 1 |  | Radiolab | WNYC Studios | |
| 4 | 1 |  | Get Birding | Peanut & Crumb | |
| 5 | 5 | F | Futureproof with Jonathan McCrea | Newstalk | |
| 6 | 3 |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 7 | — | B | Boring History for Sleep | Velvet | |
| 8 | 3 |  | StarTalk Radio | Neil deGrasse Tyson | |
| 9 | 3 | S | Show Me the Science with Luke O'Neill | Newstalk | |
| 10 | 4 |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 11 | 1 |  | Curious Cases | BBC Radio 4 | |
| 12 | 1 |  | Ologies with Alie Ward | Alie Ward | |
| 13 | 5 |  | Science Weekly | The Guardian | |
| 14 | 1 | C | CountryWide | RTÉ Radio 1 | |
| 15 | 5 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 16 | 3 |  | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 17 | — |  | Making Sense with Sam Harris | Sam Harris | |
| 18 | 143 |  | The Climate Question | BBC World Service | |
| 19 | 21 |  | Outrage + Optimism: The Climate Podcast | Persephonica and Global Optimism | |
| 20 | 31 |  | The Psychology Podcast | iHeartPodcasts | |
| 21 | 5 | M | Mooney Goes Wild | RTÉ Radio 1 | |
| 22 | 4 |  | All In The Mind | ABC | |
| 23 | 4 |  | The world, the universe and us | New Scientist | |
| 24 | 10 |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 25 | 2 |  | Science Vs | Spotify Studios | |
| 26 | 84 |  | Unexplainable | Vox | |
| 27 | 9 |  | BBC Inside Science | BBC Radio 4 | |
| 28 | 17 |  | Overheard at National Geographic | National Geographic | |
| 29 | 8 |  | Astrum Space | Astrum | |
| 30 | 2 |  | Uncharted with Hannah Fry | BBC Radio 4 | |
| 31 | 4 |  | Sasquatch Chronicles | Sasquatch Chronicles - Bigfoot Encounters | |
| 32 | 9 |  | Google DeepMind: The Podcast | Hannah Fry | |
| 33 | 11 |  | Nature Podcast | Springer Nature Limited | |
| 34 | 133 |  | That's Just Wild | Fresh Air | |
| 35 | 32 |  | I Know Dino: The Big Dinosaur Podcast | I KNOW DINO, LLC | |
| 36 | 7 |  | CrowdScience | BBC World Service | |
| 37 | 96 |  | The Science of Birds | Ivan Phillipsen | |
| 38 | 59 |  | The Supermassive Podcast | The Royal Astronomical Society | |
| 39 | 9 | F | Farming Today | BBC Radio 4 | |
| 40 | 3 |  | Das Wissen | SWR | SWR | |
| 41 | 60 |  | Science Friday | Science Friday and WNYC Studios | |
| 42 | 5 |  | Daniel and Kelly’s Extraordinary Universe | iHeartPodcasts | |
| 43 | 3 |  | The Catholic Guide to Sustainable Living | Ave Maria University | |
| 44 | 19 |  | Discovery | BBC World Service | |
| 45 | 5 | W | Wild Lives | Our Media | |
| 46 | 14 | I | In Your Nature | By BirdWatch Ireland | |
| 47 | 100 |  | Crash Course Pods: The Universe | Crash Course Pods, Complexly | |
| 48 | 73 |  | Slow Radio | BBC Radio 3 | |
| 49 | 110 | S | Sekcja teorii spiskowych. Podcast Crazy Nauka | Polskie Radio S.A. | |
| 50 | 26 |  | The Naked Scientists Podcast | The Naked Scientists | |
| 51 | — |  | Living Planet | DW | |
| 52 | 25 |  | Mysterious Universe | 8th Kind | |
| 53 | 138 |  | The Science of Everything Podcast | James Fodor | |
| 54 | — |  | Why Do We Do That? | BBC Radio 4 | |
| 55 | 115 | L | Leaving Cert Biology Revision | Mr G. O'Donovan | |
| 56 | 8 |  | The Life Scientific | BBC Radio 4 | |
| 57 | 93 |  | The Quanta Podcast | Quanta Magazine | |
| 58 | — | A | A Moment of Science | Indiana Public Media | |
| 59 | 26 |  | Unexpected Elements | BBC World Service | |
| 60 | — |  | Sea Change | WWNO & WRKF | |
| 61 | 84 |  | Drilled | Pushkin Industries | |
| 62 | — |  | Climate One | Climate One from The Commonwealth Club | |
| 63 | — | N | Naturmorgon | Sveriges Radio | |
| 64 | 26 |  | Psychiatry & Psychotherapy Podcast | David Puder, M.D. | |
| 65 | 119 | N | Nauka To Lubię | Tomasz Rożek | |
| 66 | — | T | The Compassion Initiative: Just Two Guys in Brisbane talking Compassion. www.thecompassioninitiative.com.au | The Compassion Initiative: Dr Stan Steindl and Dr James Kirby | |
| 67 | — | 2 | 28 Ways to Save the World | Newstalk | |
| 68 | — |  | Short Wave | NPR | |
| 69 | — | S | Synapsen – ein Wissenschaftspodcast | NDR Info | |
| 70 | — |  | Brain Inspired | Paul Middlebrooks | |
| 71 | — |  | Climate Cast | Minnesota Public Radio | |
| 72 | — | P | Psychology in 10 Minutes | David B. Feldman - psychology | social science | politics | mental health | |
| 73 | — |  | Sustainability, Climate Change, Renewable Energy, Politics, Activism, Biodiversity, Carbon Footprint, Wildlife, Regenerative | Mia Funk | |
| 74 | — | C | Control and the Law | Sarah Ellis | |
| 75 | — | M | MVIF Conversations | Microbiome Virtual International Forum - MVIF | |
| 76 | 29 | C | Chris Skinner's Countryside Podcasts | High Ash Farm | |
| 77 | 41 |  | Scotland Outdoors | BBC Radio Scotland | |
| 78 | 47 |  | The Astrophysics Podcast | Paul Duffell | |
| 79 | 10 |  | Universe Today Podcast | Fraser Cain | |
| 80 | 107 |  | A Question of Science | The Francis Crick Institute | |
| 81 | 61 | N | Naturefile | RTÉ lyric fm | |
| 82 | 1 |  | Why This Universe? | Dan Hooper, Shalma Wegsman | |
| 83 | 28 |  | That UFO Podcast | That UFO Podcast | |
| 84 | 45 |  | Science Magazine Podcast | Science Magazine | |
| 85 | 43 |  | Naturebang | BBC Radio 4 | |
| 86 | 30 |  | ExtinctZoo | ExtinctZoo | |
| 87 | 16 | S | Sociology Ruins Everything | Matt Sedlar | |
| 88 | 8 |  | This Podcast Will Kill You | Exactly Right and iHeartPodcasts | |
| 89 | 104 | T | The QP Diaries, by AssureBio | Dal Pawar | |
| 90 | 46 | A | AgriFood Matters | UCD School of Agriculture and Food Science | |
| 91 | 42 |  | Leaked | TFLabs | |
| 92 | 9 |  | The Michael Shermer Show | Michael Shermer | |
| 93 | 35 | Á | Ático Primera con Laia Castel | laiascastel | |
| 94 | 42 |  | Horizonte – Iker Jiménez | Mediaset | |
| 95 | — |  | ScienceStuff | iHeartPodcasts | |
| 96 | — | V | Voyage dans l'espace | Claude Lafleur | |
| 97 | 22 |  | DarkHorse Podcast | Bret Weinstein & Heather Heying | |
| 98 | 35 |  | Planetary Radio: Space Exploration, Astronomy and Science | The Planetary Society | |
| 99 | 46 |  | The Hamilton Morris Podcast | Hamilton Morris | |
| 100 | 46 | A | A Neuroscientist Explains | The Guardian | |
