S
| S!ckflag | Metalcore | Пловдив | 2006 |
| S.D.X | Hardcore | София | 2010 |
| S.E.E. | Alternative Metal/Nu Metal | Стара Загора | 2016 |
| S.I.M.B. | Stoner Rock | Амстердам (Холандия) | 2008 |
| s.nob | Alternative Rock | Смолян/Пловдив | 2005 |
| S.T.A.Y. | Alternative/Nu Metal | София | 2016 |
| S.T.I.R. | Alternative Rock | София | 2016 |
| S.T.R.A.H. | Black/Death/Doom Metal | София | 2019 |
| Sabrax | Black Metal | София | 1995 |
| Sacral Mind | Psychedelic Doom Metal | Варна | 2013 |
| Sacrisal | Thrash/Death Metal | Берковица | 2019 |
| Sad Toy Killer | Alternative/Grunge | София | 1992 |
| Saint Electrics | Alternative Rock | София | 2008 |
| Sakar | Heavy Metal | София/Хасково | 2017 |
| Saltfield | Alternative Metal | Бургас | 2017 |
| Saltriver | Alternative Rock | София | 2005 |
| SamaYra | Alternative Rock | София | 2003 |
| Samhain | Symphonic Black Metal | Благоевград | 1997 |
| Sanata Vopilif | Experimental Extreme Metal | Хасково | 1998 |
| Sando | Instrumental Rock | София | 1997 |
| Sarcastica | Death Metal | Варна | 2008 |
| Saritap | Black Metal | София | 2014 |
| Satan's Slaves | Symphonic Power Metal | Дупница | 2006 |
| Satangra | Black Metal | Кюстендил | 2003 |
| Satanic Hatred | Black Metal | Бургас | 2016 |
| Satarn | Symphonic Black Metal | Сандански | 2021 |
| Satellite | Hard Rock | София | 1988 |
| Sativa | Psychedelic Rock/Stoner Rock | София | 2012 |
| Saturn | Psychedelic Rock/Blues Rock | София | 1973 |
| Sauerkraut | Grindcore/Noisecore | Бургас | 2001 |
| Savage | Heavy Metal/Hard Rock | Дупница | 2009 |
| Savage Ravage | Thrash Metal | София | 2009 |
| Sawber | Alternative Rock | София | 2019 |
| Sawyer's Clan | Slamming Beatdown | Варна | 2018 |
| Scapegoat | Death Metal | Дупница | 1992 |
| Schadenfreude | Black Metal | Каталуния (Испания)/Благоевград | 2011 |
| Scolos | Death Metal | Бургас/София | 2014 |
| Scotopia | Grunge | Велико Търново | 2015 |
| Screanshot | Punk Rock | София | 2012 |
| Second Hand | Heavy Metal | Сливен | 2000 |
| Second To None | Punk Rock/Rock'n'Roll | Варна | 2019 |
| Seconday | Hard Rock | Ямбол | 2015 |
| Secret Society | Hardcore | България/Европа/Америка/Австралия | 2017 |
| Segmented | Death Metal/Grindcore | Добрич | 2008 |
| Seize The Day | Thrash Metal/Metalcore | Перник | 2011 |
| Sekta | Indie Rock | София | 2006 |
| Self Doomed | Death/Doom Metal | София | 2021 |
| Señor Buffo & The Synchronizers | Ska/Rocksteady/Reggae | София | 2008 |
| September 8th | Alternative/Post Grunge | Добрич | 2013 |
| Serpentine Creation | Black Metal | София | 2004 |
| Set Nitro | Progressive Metal | Бургас | 1995 |
| Seven o'Four | Alternative Rock | София | 2009 |
| Sevi | Soft Rock | София | 2010 |
| Sex Junkie | Alternative Metal | Пловдив | 2016 |
| Shades | Hard Rock | Варна | 2019 |
| Shadow Box | Punk | София | 1991 |
| Shadows Out Of Time | Melodic Thrash/Power Metal | Варна | 2018 |
| Shambless | Atmospheric Black Metal | Благоевград/София | 1997 |
| Shangri-La | Psychedelic Rock/Progrssive Rock | Пловдив | 1994 |
| Shape Of Space | Punk Rock | Варна | 2011 |
| She Was Asking For It | Metalcore | София | 2006 |
| Sheepfucker and Kraut | Stoner Rock | София | 2018 |
| Sheky | Heavy Metal | София | 1994 |
| Sheky & The Bloodrain | Heavy Metal | София | 2008 |
| Sheky & The Bloody Boys | Crossover | София | 1998 |
| Shine | Glam Rock | София | 2004 |
| Sickening Joke | Grindcore | София | 2024 |
| SickRed | Alternative Metal | София | 2015 |
| Sider | Progressive Thrash Metal | Плевен | 1994 |
| Sigulka | Celtic Heavy Rock | Мадрид (Испания) | 2013 |
| Silence | Alternative Rock | Добрич | 1993 |
| Silent Madness | Glam Metal | Варна | 2005 |
| Silver | Progressive Metal | Варна | 2008 |
| Simai | New Metal/Funk | София/Бирмингам (Англия) | 2013 |
| Simurgia | Progressive Rock | София | 2018 |
| SinDeed | Alternative Rock | Варна | 2022 |
| SinFin | Alternative Rock | София | 2024 |
| Sink Below | Progressive Metalcore | Перник | 2022 |
| Sinner | Black Metal | София | 2019 |
| Sisters Of Radomir | Black Metal | Радомир | 2009 |
| Sixty Level | Classic Rock | Хасково | 2019 |
| SJK | Power Progressive Metal | Хасково | 1996 |
| Skinflick | Hardcore | София | 1998 |
| Skitnicks | Psycho Rock/Alternative Rock | София | 2011 |
| Skleroza | Thrash/Death Metal | Панагюрище | 2022 |
| Skoda | Ska/Swing | Велико Търново | 1997 |
| Skol | Pagan Black Metal | Бургас | 2023 |
| Skre4 | Alternative/Neo Metal | Плевен | 2000 |
| Skyfar | Atmospheric Black Metal | Сандански | 2019 |
| Skyggeverden | Black Metal | Габрово | 2002 |
| Slatemant | Doom Metal/Deathcore | Русе | 2015 |
| Slathe | Grunge | Пловдив | 2022 |
| Slav De Hren | Avantgarde/Progressive Rock | София | 2005 |
| Slipstream | Hard Rock | Русе | 2020 |
| Slix | Thrash Metal | София | 2012 |
| Smallman | Alternative Folk Metal | Асеновград | 2001 |
| Smerch | Alternative Rock/Psychedelic Rock | София | 2004 |
| Smokey Mountain River Band | Psychedelic/Hard Rock | София | 2019 |
| Smokin’ Barrels | Alternative Rock | София | 2014 |
| Snade | Alternative Rock/Grunge | Пловдив | 2016 |
| Snøstorm | Melodic Black Metal | София/Норвегия | 2022 |
| Sofia Ska Skins | Ska | София | 2004 |
| Solarfall | Funeral Doom Metal | Пловдив | 2003 |
| Solid | Heavy Metal | Хасково | 2007 |
| Soma Race | Alternative Rock/Nu Metal | Харманли | 1994 |
| Soul Mortgage | Alternative Rock | София | 2021 |
| Soulcore | Alternative Metal | Бургас | 2013 |
| SoulFever | Alternative Rock | Варна | 2022 |
| Soulriver | Alternative Rock | София | 2004 |
| Soulshedder | Black Metal | София | 2024 |
| Soundbleed | Alternative Rock | Асеновград | 2007 |
| Soundfull | Alternative Rock | Бургас | 2008 |
| Soundprophet | Alternative Rock | София | 2010 |
| Soundwave | Blues Rock/Hard Rock | София | 2011 |
| Sources Of I | Black Metal | София | 2014 |
| South Criminal | Thrash Metal | Варна | 2011 |
| SpaceWeaver | Psychedelic/Stoner/Doom | София | 2021 |
| Spectral Citadel | Black Metal | София | 2023 |
| Spectre Of Sanity | Metalcore/Djent | София | 2017 |
| Sphaera Mystica | Symphonic Black Metal | Враца | 2004 |
| Spiders | Hard Rock | Петрич | 1992 |
| Spiraless | Jazz Rock/Fusion | Пловдив/Кърджали | 2006 |
| Spiritualmind | Instrumental Progressive Metal | Монтана | 2007 |
| Spleen | Thrash Metal | Божурище | 1985 |
| Splendor And Misery | Experimental Synth Pop | София | 2015 |
| Spontaneous Combustion | Slam/Brutal Death Metal | Варна | 2022 |
| Spot | Punk Rock | Русе | 1999 |
| Squad Of Death | Death Metal | Враца | 2017 |
| Staffa | Thrash Metal | Бургас | 2011 |
| Star Queen | Power Gothic Metal | София/Швеция | 2001 |
| Start Today | Hardcore | Пловдив | 2008 |
| Start Today | Hardcore | София | 2001 |
| Steel Project | Heavy Metal | София | 2022 |
| Steelers | Heavy Metal | Пловдив | 2015 |
| Stenli Stefanov's Project | Neoclassical Power Metal | Левски | 2010 |
| Stereodive | Alternative Rock | Пловдив | 2023 |
| Stereorush | Hard Rock | София | 2012 |
| Stokholm | Alternative Rock | Бургас | 2008 |
| Stone Angel | Progressive/Thrash Metal | София | 2010 |
| Stone Cold | Hard/Heavy Rock | Бяла Слатина | 1994 |
| Stonehenge | Hard Rock | София | 1994 |
| Stop The Schizo | Alternative Rock | София | 2014 |
| Storm | Heavy Metal/Hard Rock | София | 2011 |
| StormBlast | Heavy Metal | Русе | 2003 |
| Stormsheim | Black Metal | Кюстендил | 1996 |
| Stranger | Hard Rock | Пазарджик | 1988 |
| Strangers | Hard Rock | София | 1995 |
| Strategy X | Hardcore | София | 1995 |
| Streetdust | Blues Rock | София | 2015 |
| Stride Forward | Hardcore | Плевен | 1998 |
| Strifle | Beatdown/Deatcore | София | 2022 |
| Strings | Symphonic Rock/Metal | София | 2001 |
| Strix | Hard Rock | Перник | 2011 |
| Strykers | Melodic Hard Rock | Плевен | 2021 |
| Stunlock | Metalcore | София | 2017 |
| Stürm Kommand | Raw Black Metal | София | 2005 |
| Sub Terra | Slam/Brutal Death Metal | Кърджали | 2022 |
| Sub Zero Farm | Punk/Alternative | София | 2008 |
| Subtierra | Alternative Rock | София | 1999 |
| Successor | Thrash Metal | Левски | 1995 |
| Succubus | Doom/Death Metal | Благоевград | 1994 |
| Suffer H | Crossover/Industrial | София | 1995 |
| Suffocated Vomit | Noisecore/Grindcore | Плевен | 1997 |
| Sullen But Straight | Hardcore | София | 2022 |
| Sun Of The Moon | Reggae | Варна | 2014 |
| Sunblinds | Indie Rock | София | 2022 |
| Sunday | Hard Rock | София | 2012 |
| Sunrise Anger | Gothic Metal/Rock | Плевен | 2023 |
| Sunrize | Hard Rock/Blues Rock | Бургас | 1992 |
| Suns & Daughters | Art Rock | Лом | 1991 |
| Suppurated Corpse | Death Metal/Grindcore | Силистра | 1990 |
| Surration | Djent/Metalcore | Бургас | 2017 |
| Svarrogh | Folk Black Metal/Neofolk | Розенхайм (Германия) | 2001 |
| Svelsurdus | Black Metal | Неизвестна дестинация | 2021 |
| Svimmelhet | Ambient Black Metal/Doom Metal | София | 2015 |
| Sweet Poison | Pop Rock | Монтана | 2022 |
| Swindle Cord | Punk Rock | Берковица | 2003 |
| Switchstance | Skacore/Punk Rock | София | 2000 |
| Syco Tribe | Rapcore/Hardcore | София | 1993 |
| Symbolic | Progressive Thrash/Death Metal | Варна | 2002 |
| Symmetrix | Pop Rock | Дупница | 2016 |
| Symphony | Melodic Power Metal | София | 1991 |
| System | Black Metal | Свищов | 2012 |
| Syyv Gornyak | Doom/Death Metal | София | 2013 |