| 1 | — |  | Espacio en blanco | Radio Nacional | |
| 2 | 1 |  | Horizonte – Iker Jiménez | Mediaset | |
| 2 | — | P | Podcast de Juan Ramón Rallo | Juan Ramón Rallo | |
| 4 | 1 |  | Coffee Break: Señal y Ruido | Coffee Break: Señal y Ruido | |
| 4 | 1 |  | Materia Oscura | ABC | |
| 6 | 1 |  | Heavy Mental | David, Javier y Miki | |
| 6 | — |  | Órbita Laika. El podcast | RNE Audio | |
| 6 | 4 | M | Muy Interesante - Grandes Reportajes | Zinet Media | |
| 6 | 2 | A | Antifragil Podcast | Omar Enfedaque & Tribal Uri | |
| 8 | 2 |  | StarTalk Radio | Neil deGrasse Tyson | |
| 8 | 1 | V | Vida Eterna. Respuestas desde la Ciencia | Dr. Manuel Sans Segarra | Dr. Manuel Sans Segarra | |
| 9 | 6 |  | Radiolab | WNYC Studios | |
| 11 | 2 | L | La Ciencia de A Vivir | Cadena SER | |
| 12 | 2 |  | A hombros de gigantes | Radio 5 | |
| 12 | — |  | Sapiens | Radio Nacional | |
| 14 | 1 | H | Hablando con Científicos - Cienciaes.com | cienciaes.com | |
| 14 | 28 |  | The End Of The World with Josh Clark | iHeartPodcasts | |
| 15 | 2 |  | Ologies with Alie Ward | Alie Ward | |
| 16 | 3 | C | Catástrofe ultravioleta | elDiario.es | |
| 16 | 5 |  | Arpa Talks | Arpa Talks | |
| 18 | — | T | Tras la tormenta | Radio Nacional | |
| 19 | 3 | U | Un Humano por Persona | Tamara Pazos Cordal | |
| 20 | 3 | L | La Brújula de la Ciencia | Alberto Aparici | |
| 21 | 7 | Á | Ático Primera con Laia Castel | laiascastel | |
| 22 | 4 |  | A Question of Science | The Francis Crick Institute | |
| 22 | 6 |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 24 | 5 | C | Conversemos de astronomía | Juan Carlos Beamin | |
| 25 | 12 | N | Notas de Naturaleza | Iván Vega | |
| 26 | — | C | CardioPODCAST | Sociedad Española de Cardiología | |
| 26 | 6 | E | El Guardabosques WildPodcast | Laura Núñez Bañuls y Fracesco Rovedo | |
| 26 | 4 | O | Oscilador Armónico | OsciladorArmónico | |
| 26 | 1 | R | Radio de Supervivencia | David Martinez | |
| 26 | 1 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 28 | 7 | Á | Átomos y Bits | Agencia EFE | |
| 28 | 2 | E | EHUpodcast | Universidad del País Vasco/Euskal Herriko Unibertsitatea (EHU) | |
| 29 | — |  | Opinionated History of Mathematics | Intellectual Mathematics | |
| 30 | 11 | A | Aparici en Órbita | Alberto Aparici | |
| 31 | 3 |  | BBC Inside Science | BBC Radio 4 | |
| 31 | — |  | More or Less | BBC Radio 4 | |
| 31 | 17 |  | Manifold | Steve Hsu | |
| 34 | 26 |  | Mindfacts: Historia y futuro de la Ciencia y la Tecnología | Yes We Cast | |
| 34 | 28 |  | Discovery | BBC World Service | |
| 35 | 2 |  | Making Sense with Sam Harris | Sam Harris | |
| 37 | 11 |  | Universo curioso de la NASA | National Aeronautics and Space Administration (NASA) | |
| 38 | 33 |  | The Nature Of with Willow Defebaugh | Atmos | |
| 38 | 27 | D | De Ignorancia Sí que Sé | Alberto Aparici | |
| 38 | 22 |  | Mariano Sigman: un podcast de sus libros | Penguin Random House Grupo Editorial | |
| 38 | 2 |  | Why This Universe? | Dan Hooper, Shalma Wegsman | |
| 39 | 5 |  | Serendipias | SER Podcast | |
| 39 | — |  | Aha! Zehn Minuten Alltags-Wissen | WELT | |
| 40 | 50 | F | Física y química | Fundación Ramón Areces | |
| 40 | 3 |  | Speaking of Psychology | American Psychological Association | |
| 40 | 4 | L | La taberna del Beagle | Carmela García Doval y Pedro M. Sánchez | |
| 41 | 3 |  | Theories of Everything with Curt Jaimungal | Theories of Everything | |
| 43 | — | G | GeoCastAway | GeoNáufragos | GeoCastAway | |
| 44 | 19 |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 45 | 123 | P | PARSEC | Javier Atapuerca, Matías S. Zavia | |
| 45 | 9 | E | El bosque habitado | Radio 3 | |
| 46 | 8 | L | Los Barberos | Los Barberos | |
| 46 | 15 | A | Astro Podcast | Astro Podcast | |
| 47 | 16 | E | El sueño de Laika | JuanMa Parrondo | |
| 48 | 114 |  | Fallo de sistema | Radio 3 | |
| 48 | — |  | The Joy of Why | Steven Strogatz, Janna Levin and Quanta Magazine | |
| 49 | 16 |  | Proxy with Yowei Shaw | Y3 Productions | |
| 51 | — | M | Mundo Insólito Radio | Mundo Insólito Radio | |
| 51 | 3 |  | Crash Course Pods: The Universe | Crash Course Pods, Complexly | |
| 52 | 51 |  | Palabra Plena, con Gabriel Rolón | Infobae | |
| 52 | — | A | A su salud | Radio 5 | |
| 52 | — |  | CrowdScience | BBC World Service | |
| 53 | 12 | L | La Terre au carré | France Inter | |
| 53 | — |  | Terrace | تراس | امیرپارسا نشاط | |
| 55 | 29 | H | Historia de la ciencia y de sus protagonistas | Fundación Ramón Areces | |
| 55 | 123 | E | Espacio en blanco | Radio Nacional | |
| 56 | 14 | M | Master Class con Juan Luis Arsuaga | OndaCero | |
| 56 | — |  | ZEIT WISSEN. Woher weißt Du das? | DIE ZEIT | |
| 58 | 3 | D | Diálogos con la ciencia | Javier Ángel Ramirez - Radio María ESP | |
| 59 | — | L | La aventura de la vida | Félix Rodriguez de la Fuente | |
| 59 | 18 | H | Hi ha algú, allà fora? | Joan Anton Català | |
| 59 | 113 |  | Science Friday | Science Friday and WNYC Studios | |
| 59 | — | R | reforma.com - Benchmark con Jorge A. Meléndez | reforma.com | |
| 60 | 8 |  | Wissen Weekly | Spotify Studios | |
| 61 | 19 |  | Ciencia y aparte (by Xataka) | Webedia | |
| 62 | — |  | IQ - Wissenschaft und Forschung | Bayerischer Rundfunk | |
| 62 | — |  | This Week in Cardiology | Medscape | |
| 63 | 20 |  | All In The Mind | ABC | |
| 64 | — |  | The Science Show | ABC listen | |
| 66 | 18 | E | El jardín en que me he metido | Erina Wild | |
| 66 | — | S | Speaking of Mol Bio | Thermo Fisher Scientific | |
| 67 | — | A | Anthropologie de la nature - Philippe Descola | Collège de France | |
| 67 | 14 | E | Efervesciencia | Efervesciencia | |
| 68 | 9 |  | Quarks Daily | Quarks | |
| 68 | — |  | TheThinkingAtheist | The Thinking Atheist | |
| 69 | — | U | Urbanismo y Vivienda | Javier de la Torre | |
| 69 | 14 |  | Jefillysh: Ciencia Simplificada | Carolina Jefillysh | |
| 70 | 21 | E | El último humanista | Fernando Espí Forcén | |
| 71 | — | T | The Engineering Communication Podcast | Kelly Scarff | |
| 71 | 13 | E | El Podcast del Hidrógeno | El Podcast del Hidrógeno | |
| 71 | — |  | This Week in Microbiology | Vincent Racaniello | |
| 73 | — |  | Ask the Naked Scientists | Dr Chris Smith | |
| 74 | 8 |  | The Quanta Podcast | Quanta Magazine | |
