| 1 | — |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 2 | — |  | The Michael Shermer Show | Michael Shermer | |
| 3 | — |  | Uncharted with Hannah Fry | BBC Radio 4 | |
| 4 | 1 | N | Naked Scientists, In Short Special Editions Podcast | The Naked Scientists | |
| 5 | 1 | V | Von Ráðgjöf - Lausnin Hlaðvarp | Von ráðgjöf - Lausnin hlaðvarp | |
| 6 | 1 |  | Making Sense with Sam Harris | Sam Harris | |
| 7 | 1 | S | Sound Healing / Sound Bath | Omandala Vietnam | |
| 8 | 1 |  | The Science of Birds | Ivan Phillipsen | |
| 9 | 1 |  | Most Terrifying Places in America | Travel Channel | |
| 10 | 1 |  | Into the Impossible With Brian Keating | Big Bang Productions Inc. | |
| 11 | 1 |  | Mythfits | Pionaire Podcasting | |
| 12 | 11 |  | Radiolab | WNYC Studios | |
| 13 | 2 |  | Instant Genius | Our Media | |
| 14 | 2 |  | Robinson's Podcast | Robinson Erhardt | |
| 15 | 2 | I | Inquiring Minds | Indre Viskontas | |
| 16 | 1 |  | Science Friday | Science Friday and WNYC Studios | |
| 17 | 3 |  | This Podcast Will Kill You | Exactly Right and iHeartPodcasts | |
| 18 | — |  | Raising Health | Andreessen Horowitz, a16z Bio + Health | |
| 19 | 41 |  | Curious Cases | BBC Radio 4 | |
| 20 | 4 |  | Tooth & Claw: True Stories of Animal Attacks | Wes Larson, Jeff Larson, Mike Smith | Daylight Media | |
| 21 | 4 |  | Science Vs | Spotify Studios | |
| 22 | 2 |  | StarTalk Radio | Neil deGrasse Tyson | |
| 23 | 161 |  | Psychiatry & Psychotherapy Podcast | David Puder, M.D. | |
| 24 | 3 |  | Science Weekly | The Guardian | |
| 25 | 24 |  | Unexpected Elements | BBC World Service | |
| 26 | 7 | S | Stimulating Brains | Andreas Horn | |
| 27 | 20 |  | More or Less | BBC Radio 4 | |
| 28 | 73 |  | Dumma Människor | Acast - Lina Thomsgård och Björn Hedensjö | |
| 29 | 11 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 30 | — |  | That UFO Podcast | That UFO Podcast | |
| 31 | 62 |  | Bigfoot Eyewitness Radio | Vic Cundiff | |
| 32 | 8 | S | Stanford Computational Antitrust | Thibault Schrepel | |
| 33 | 87 |  | Mysterious Universe | 8th Kind | |
| 34 | 12 |  | Unexplainable | Vox | |
| 35 | 3 |  | BBC Inside Science | BBC Radio 4 | |
| 36 | 68 |  | Inner Cosmos with David Eagleman | iHeartPodcasts | |
| 37 | — | W | What the Field?! A podcast by CrowdFarming | CrowdFarming | |
| 38 | 13 |  | The Plodcast | Our Media | |
| 39 | 39 | I | Intertek's Assurance in Action Podcast Network | Intertek | |
| 40 | 49 |  | This Week in Virology | Vincent Racaniello | |
| 41 | 101 |  | CrowdScience | BBC World Service | |
| 42 | 131 |  | Choiceology with Katy Milkman | Charles Schwab | |
| 43 | 146 |  | Podcast UFO | Martin Willis | |
| 44 | 8 |  | Speaking of Psychology | American Psychological Association | |
| 45 | 16 |  | That's Just Wild | Fresh Air | |
| 46 | 110 |  | Scotland Outdoors | BBC Radio Scotland | |
| 47 | 21 | C | Converging Dialogues | Converging Dialogues | |
| 48 | 38 |  | World’s Wildest: Tales of Earth’s Most Extreme Creatures | Maya Higa & Connor O'Brien | |
| 49 | 24 |  | PlanetGeo: The Geology Podcast | Chris and Jesse | |
| 50 | 87 |  | Discovery | BBC World Service | |
| 51 | 112 |  | Space Nuts: Astronomy Insights & Cosmic Discoveries | Professor Fred Watson and Andrew Dunkley | |
| 52 | 127 | T | The We Society | AcSS | |
| 53 | 26 |  | Science In Action | BBC World Service | |
| 54 | 23 |  | Das Wissen | SWR | SWR | |
| 55 | 14 |  | Razib Khan's Unsupervised Learning | Razib Khan | |
| 56 | 14 | L | Let's Talk Micro | Luis Plaza | |
| 57 | 14 |  | The Tox Lab | The Tox Lab | |
| 58 | 14 |  | The Joy of x | Steven Strogatz and Quanta Magazine | |
| 59 | 31 |  | The Origins Podcast with Lawrence Krauss | Lawrence M. Krauss | |
| 60 | — |  | A Life More Wild | Canopy & Stars | |
| 61 | 29 |  | The Joy of Why | Steven Strogatz, Janna Levin and Quanta Magazine | |
| 62 | 8 |  | The Orthobullets Podcast | Orthobullets | |
| 63 | 30 |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 64 | 30 |  | Outrage + Optimism: The Climate Podcast | Persephonica and Global Optimism | |
| 65 | 15 |  | The Supermassive Podcast | The Royal Astronomical Society | |
| 66 | 31 |  | Short Wave | NPR | |
| 67 | — | F | Fossils and Fiction | Travis Holland and Alyssa Fjeld. | |
| 68 | 32 |  | Better Brain Fitness (a Brainjo Production) | Josh Turknett, MD | |
| 69 | 5 |  | Nature Podcast | Springer Nature Limited | |
| 70 | 33 |  | Mysterious Radio: Paranormal, UFO and Lore Interviews | Podcast Audio House | |
| 71 | 14 | L | LIPID MAPS® Podcasts | LIPID MAPS | |
| 72 | 14 | L | Listen to The Lancet Child & Adolescent Health | The Lancet Child & Adolescent Health | |
| 73 | 34 |  | Astrum Space | Astrum | |
| 74 | 34 | T | The Systemic Way | Sezer and Julie | |
| 75 | 25 |  | Daniel and Kelly’s Extraordinary Universe | iHeartPodcasts | |
| 76 | 31 |  | The Micah Hanks Program | Micah Hanks | |
| 77 | 29 |  | Sidenote by AsapSCIENCE | AsapSCIENCE | |
| 78 | 120 | M | Many Minds | Kensy Cooperrider – Diverse Intelligences Summer Institute | |
| 79 | — |  | The Black Vault Radio w/ John Greenewald, Jr. | John Greenewald, Jr. | |
| 80 | — | C | Catástrofe ultravioleta | elDiario.es | |
| 81 | 20 |  | The Naked Scientists Podcast | The Naked Scientists | |
| 82 | 29 |  | Paranormal Mysteries | Nic Ryan | Paranormal Mysteries Podcast | |
| 83 | 37 |  | Ologies with Alie Ward | Alie Ward | |
| 84 | 29 |  | WEAPONIZED with Jeremy Corbell & George Knapp | Jeremy Corbell and George Knapp | |
| 85 | 10 | B | Bon Chien | Dave Putman, Forrest Micke, Josh Moran | |
| 86 | 30 |  | The Psychology Podcast | iHeartPodcasts | |
| 87 | 28 |  | The Life Scientific | BBC Radio 4 | |
| 88 | 21 |  | Alive Again | iHeartPodcasts | |
| 89 | 27 |  | Why This Universe? | Dan Hooper, Shalma Wegsman | |
| 90 | 27 |  | Stuff To Blow Your Mind | iHeartPodcasts | |
| 91 | — |  | Espacio en blanco | Radio Nacional | |
| 92 | 23 |  | Clearer Thinking with Spencer Greenberg | Spencer Greenberg | |
| 93 | 6 | F | Forskarprat – Linnéuniversitetets podcast | Linnéuniversitetet | |
| 94 | 29 |  | That's Absurd Please Elaborate | Trace Elements Media | |
| 95 | 29 |  | The Quanta Podcast | Quanta Magazine | |
| 96 | 29 |  | The Grave Talks | Haunted, Paranormal & Supernatural | Ghost Stores, Haunted, Paranormal & Supernatural Stories | |
| 97 | 29 |  | Big Picture Science | Big Picture Science | |
| 98 | 27 |  | Skeptics with a K | Skeptic Media Limited | |
| 99 | 29 |  | Planetary Radio: Space Exploration, Astronomy and Science | The Planetary Society | |
| 100 | 28 |  | Dr Karl Podcast | triplej | |
