| 1 | — |  | Espacio en blanco | Radio Nacional | |
| 2 | — | P | Podcast de Juan Ramón Rallo | Juan Ramón Rallo | |
| 3 | 1 |  | Coffee Break: Señal y Ruido | Coffee Break: Señal y Ruido | |
| 3 | 1 |  | Horizonte – Iker Jiménez | Mediaset | |
| 3 | — |  | Materia Oscura | ABC | |
| 5 | 1 |  | Heavy Mental | David, Javier y Miki | |
| 6 | 3 |  | Órbita Laika. El podcast | RNE Audio | |
| 7 | — | V | Vida Eterna. Respuestas desde la Ciencia | Dr. Manuel Sans Segarra | Dr. Manuel Sans Segarra | |
| 8 | — | A | Antifragil Podcast | Omar Enfedaque & Tribal Uri | |
| 9 | — | L | La Ciencia de A Vivir | Cadena SER | |
| 10 | 3 |  | A hombros de gigantes | Radio 5 | |
| 10 | 2 |  | StarTalk Radio | Neil deGrasse Tyson | |
| 10 | 9 | M | Muy Interesante - Grandes Reportajes | Zinet Media | |
| 12 | — |  | Sapiens | Radio Nacional | |
| 13 | 8 | C | Catástrofe ultravioleta | elDiario.es | |
| 13 | 3 | H | Hablando con Científicos - Cienciaes.com | cienciaes.com | |
| 14 | 3 | Á | Ático Primera con Laia Castel | laiascastel | |
| 15 | 1 |  | Radiolab | WNYC Studios | |
| 16 | 2 |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 16 | 6 | U | Un Humano por Persona | Tamara Pazos Cordal | |
| 17 | 22 |  | Ologies with Alie Ward | Alie Ward | |
| 18 | 2 |  | A Question of Science | The Francis Crick Institute | |
| 18 | — | T | Tras la tormenta | Radio Nacional | |
| 19 | 4 | C | Conversemos de astronomía | Juan Carlos Beamin | |
| 19 | — | A | Aparici en Órbita | Alberto Aparici | |
| 20 | 4 | E | El Guardabosques WildPodcast | Laura Núñez Bañuls y Fracesco Rovedo | |
| 21 | 14 |  | Arpa Talks | Arpa Talks | |
| 22 | 2 | O | Oscilador Armónico | OsciladorArmónico | |
| 23 | 3 | L | La Brújula de la Ciencia | Alberto Aparici | |
| 25 | 2 | R | Radio de Supervivencia | David Martinez | |
| 25 | 13 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 25 | 6 |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 26 | — | E | EHUpodcast | Universidad del País Vasco/Euskal Herriko Unibertsitatea (EHU) | |
| 26 | 6 |  | Universo curioso de la NASA | National Aeronautics and Space Administration (NASA) | |
| 28 | 2 |  | BBC Inside Science | BBC Radio 4 | |
| 29 | — |  | Opinionated History of Mathematics | Intellectual Mathematics | |
| 31 | 1 |  | More or Less | BBC Radio 4 | |
| 31 | 3 | E | El sueño de Laika | JuanMa Parrondo | |
| 33 | — |  | Proxy with Yowei Shaw | Y3 Productions | |
| 33 | 8 |  | Making Sense with Sam Harris | Sam Harris | |
| 35 | 4 | Á | Átomos y Bits | Agencia EFE | |
| 36 | 10 |  | Why This Universe? | Dan Hooper, Shalma Wegsman | |
| 36 | 5 | E | El bosque habitado | Radio 3 | |
| 37 | 9 | N | Notas de Naturaleza | Iván Vega | |
| 37 | 37 |  | Speaking of Psychology | American Psychological Association | |
| 38 | 26 | L | Los Barberos | Los Barberos | |
| 38 | — |  | Theories of Everything with Curt Jaimungal | Theories of Everything | |
| 41 | 90 | L | La Terre au carré | France Inter | |
| 41 | 14 | H | Hi ha algú, allà fora? | Joan Anton Català | |
| 42 | 4 |  | Ciencia y aparte (by Xataka) | Webedia | |
| 42 | — |  | The End Of The World with Josh Clark | iHeartPodcasts | |
| 42 | 22 | M | Master Class con Juan Luis Arsuaga | OndaCero | |
| 43 | 4 |  | All In The Mind | ABC | |
| 43 | — | G | GeoCastAway | GeoNáufragos | GeoCastAway | |
| 44 | 14 |  | Serendipias | SER Podcast | |
| 44 | 84 | L | La taberna del Beagle | Carmela García Doval y Pedro M. Sánchez | |
| 45 | 6 |  | PÍLDORAS de BIOTECH | Ysios Capital & Pharma New Talent | |
| 46 | — |  | TEDTalks Ciencia y Medicina | TED | |
| 47 | 16 |  | The Social-Engineer Podcast | Social-Engineer, LLC | |
| 48 | 22 |  | The Joy of Why | Steven Strogatz, Janna Levin and Quanta Magazine | |
| 48 | 95 |  | Manifold | Steve Hsu | |
| 48 | — | E | El jardín en que me he metido | Erina Wild | |
| 48 | 21 |  | Crash Course Pods: The Universe | Crash Course Pods, Complexly | |
| 49 | 15 | E | El último humanista | Fernando Espí Forcén | |
| 50 | 14 | C | Ciencia para leer | CSIC Divulga | |
| 51 | — |  | Freakonomics, M.D. | Freakonomics Radio + Stitcher | |
| 52 | — |  | Wissen Weekly | Spotify Studios | |
| 53 | 3 | P | Podcast Ladera Sur - Inspirados por la Naturaleza | Ladera Sur | |
| 53 | — | E | Efervesciencia | Efervesciencia | |
| 55 | 101 | D | Diálogos con la ciencia | Javier Ángel Ramirez - Radio María ESP | |
| 55 | 16 |  | Short Wave | NPR | |
| 55 | — |  | Jefillysh: Ciencia Simplificada | Carolina Jefillysh | |
| 56 | 13 | L | L’actualitat de la UB, en pòdcast | Universitat de Barcelona | |
| 57 | 7 | B | Biología de Tranquis | Nico Palanca | |
| 58 | — | E | El Podcast del Hidrógeno | El Podcast del Hidrógeno | |
| 59 | — |  | Quarks Daily | Quarks | |
| 60 | — |  | Mariano Sigman: un podcast de sus libros | Penguin Random House Grupo Editorial | |
| 60 | 12 |  | Mindfacts: Historia y futuro de la Ciencia y la Tecnología | Yes We Cast | |
| 60 | — |  | Shark Week: The Podcast | Discovery | |
| 61 | — | H | HOSPITAL DE PLANTAS | ADR NETWORKS | |
| 61 | 17 | A | Astro Podcast | Astro Podcast | |
| 62 | 19 | L | La Terra és plana | Catalunya Ràdio | |
| 62 | — |  | Astrum Space | Astrum | |
| 62 | — |  | Discovery | BBC World Service | |
| 63 | 8 | C | Cruce de cables | Radio Nacional | |
| 63 | — | O | Ogami Station | RatedPower | |
| 65 | — |  | HOLOSKY PODCAST | Holosky Podcast | |
| 65 | 16 | D | De Ignorancia Sí que Sé | Alberto Aparici | |
| 66 | 17 | S | Solaris | Podium Podcast | |
| 66 | — | L | Luciérnagas CLPU – FECYT (MICIU) | Luciérnagas CLPU FECYT | |
| 66 | — |  | The Quanta Podcast | Quanta Magazine | |
| 67 | — | Z | Zoologia | Alana Portilho | |
| 67 | 16 | T | The Biotech Startups Podcast | Excedr | |
| 67 | — | T | The Governance Podcast | Centre for the Study of Governance and Society | |
| 68 | 8 | U | Una Mirada al Cosmos. | Grupo de Astronomía OrionDelta | |
| 68 | — | M | Mangas Verdes | Agencia EFE | |
| 69 | 8 | C | Cienciaes.com | cienciaes.com | |
| 69 | 16 | C | Catástrofe Ultravioleta | Marcos Paulo Teodoro de Oliveira | |
| 69 | — |  | Голый землекоп | libo/libo | |
| 70 | — | I | Investigando la investigación | Horacio Pérez-Sánchez | |
