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| Radio Free Monday | Music | Jeff Licitra |
| Radio Free Occupation | News, Information, Talk, Music | |
| Ridding the Mind of Waste | Ridding the Mind of Waste | WUSB DJ |
| Robot Radio | Awesome music | Mogara |
| Rock & Roll Rebel Radio | Gazorpazorp | Music Director and rnrrr |
| Rock and Roll Rebel Radio | Gazorpazorp | WUSB DJ |
| Rock Nation | Music | |
| RockSB | Rock | |
| Rukkuss Radio | Music | DjRichieRukkuss |
| Sam's Show | Music/Interviews/Talk | ThisBirdHasFlown |
| Sam's Show | Music | |
| Say Whats Radio | all manners of rock, indie, punk, hardcore, hip hop, and all of their assorted sub-genres, also local bands live on the air | DJ JD |
| Scream The Sound | drone and drift | screamthesound |
| Seattle Public Library | Stuffs | Astroturf |
| Seawolves Night Live (discontinued in 2012) | Sports | WUSB SPORTS |
| Seawolves Soundwaves | Music | Arnie and Gisele |
| Seawolves Sports Weekly - CANCELLED | SPORTS | WUSB SPORTS |
| Serendipity | N/A | noface |
| Serendipity | Music | noface |
| Shockwave | Talk | |
| Should They Have The Power | Talk | Trevor Christian |
| Sick, Sad, World | Indie, Alternative | Jaida |
| Sick, Sad, World | Indie, Punk, Emo, Alternative | Jaida |
| Skagasm | Ska | Rachel and Rob Perez |
| Skylab | Indie, nu-jazz, alternative | Arnie |
| Smiley Mace Radio | Music | |
| Smooth Jazz Radio | Music/Talk/Jazz | gabruzze |
| Snowshoe Barbeque | Free-Form Music | Jonathan |
| Soma Radio | Music/Talk/Local/New | djcondor and goldenrod |
| Songs From Inner Suburbia | Dokus | justdokus |
| Sonic Queery | Indie, Alternative, Prog, Inclusive, Upbeat, Optimistic, News, Opinions | DJ K0 |
| Sore Ears | Indie Rock, Punk Rock, Shoegaze, Emo, Public Health | isa |
| Soul Glo Bistro | Hip Hop | Soul Glo Bistro |
| Sound Vines | Freeform | natasha |
| Spit and Shout | Progressive Post Hardcore | DJ Vankman |
| Spit n' Shout | Hardcore | DJ Vankman |
| Standard Deviations | Freeform/Talk | JohnAblan |
| Stony Brook Championship Radio | Music! | |
| Stony Brook Indie | Talk/Music | |
| Street Hassle with Chunky Gomez | Freeform | Finn |
| Strobe Lights | Electronic, dance, defensive driving, current events, rhythm | DJ Deep Sea Creature |
| Student Takeover | Free-form by the students! | DJ Joi and StudentDJ |
| sub.rad | A veritable Smörgåsbord | DJ Ev |
| Supa HOTT Fire Mix | Hip Hop | |
| Super Songs & Good Grooves | music | |
| Sustain It | Talk and music | Habanero |
| Swedish Salmon Paste | Swedish Salmon Paste | Arcanix |
| Sweet Suzi Blues | Blues | |
| Taking Care of Yourself | Talk | |
| Taking Care of Yourself | Self Help | WUSB DJ |
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