B
| B.F.D.M. | Hardcore | София | 2005 |
| Babyface Clan | Alternative Rock | София | 1991 |
| Bad Century | Alternative Rock | Бургас | 2013 |
| Bad City | Hard Rock | Перник | 1992 |
| Bad Habit | Alternative Rock | София | 2005 |
| Bad Image | Heavy Metal/Hard Rock | Хасково | 1996 |
| Badcast | Rapcore | София | 2014 |
| Baddy Band | Jazz Rock/Progressive Rock | София | 1991 |
| Balkhara | Stoner/Gothic Rock | София | 2008 |
| Balkona Boys | Crossover | София/Тетевен/Бургас | 2020 |
| Baltavar | Thrash Metal | Козлодуй | 2018 |
| Bandito Sunrise | Dark Country Rock | Плевен | 2010 |
| Baron Chameleon | Classic Rock | София | 2018 |
| Bass'n'Flower | New Wave | София | 2017 |
| Bastardolomey | Groove Metal/Industrial | София | 2007 |
| Bears And Hunters | Alternative/Indie Rock | София | 2014 |
| BeatTanger's | Psychedelic Rock | София | 1992 |
| Bee In The Bonnet | Alternative Rock | Бургас | 2009 |
| Belgarath | Black Metal | София | 2003 |
| Bendida | Symphonic Power Metal | София | 2008 |
| Bestia Ater | Death Metal | София | 2016 |
| Beta | Alternative Rock | Варна | 2018 |
| Better Place Navy | Alternative Rock | София | 2006 |
| Better Than Grey | Pop Punk | София | 2010 |
| Beyond Faith | Death Metal/Deathcore | София | 2014 |
| BFH | Hardcore | Варна | 1996 |
| BG Rock | Heavy Metal/Hard Rock | София | 1991 |
| BGB | Hard Rock/Heavy Metal | Хасково | 2013 |
| Big Fat Lily | Alternative/Heavy Metal/Rock | Пазарджик | 2011 |
| Big Mama Scandal | Glam Rock | София | 1991 |
| Biophobia | Black Metal | Бургас | 1992 |
| Blaast | Death Metal | Свищов | 2010 |
| Black Diamond | Hard Rock | Смолян | 2008 |
| Black Diamond | Heavy Metal | Кюстендил | 1994 |
| Black Flames | Metalcore | Добрич | 2011 |
| Black Hole | Hard Rock | София | 2002 |
| Black Pentagram | Black/Death Metal | Варна | 2004 |
| Black Romance | Pop Rock | Бургас | 2011 |
| Black Rose | Hard Rock | Благоевград | 1991 |
| Black:I | Black Metal | София | 2020 |
| Blackmail | Punk/Hardcore | София | 2011 |
| Blank Generation | Punk Rock | София | 2007 |
| Bleak Revelation | Melodic Death/Doom Metal | София | 2011 |
| Bleeding Black | Raw Black Metal | Враца | 1999 |
| Bleeding Thorn | Black Metal | София | 1995 |
| Blemmyes | Progressive Death Metal | Благоевград | 2015 |
| Blentkills | Power Metal | Сливен | 2014 |
| Blinded Through the Seasons | Alternative Metal | София | 2019 |
| Bloodlines | Progressive Metal | Бургас | 2010 |
| Bloodrush | Stoner Rock/Groove Metal | Добрич/Гилфърд (Англия) | 2012 |
| Blue Lemon | Classic Rock | Пловдив | 2016 |
| Blues Deluxe | Blues Rock | София | 2009 |
| Blues Strings | Blues Rock | Русе | 2015 |
| Blues Traffic | Blues/Blues Rock | Пловдив | 1997 |
| BlueStream | Blues Rock | София | 2014 |
| Blund | Alternative Rock | Стара Загора | 2013 |
| Blush | Indie Rock | София | 2007 |
| Bojidar Messiah | Heavy Metal/Symphonic Rock | София | 2012 |
| Bolg | Black Metal | Радомир | 2003 |
| Bombshelter | Hardcore Punk | Варна | 2007 |
| Booze Brothers | Stoner Rock | София | 2009 |
| Born Dead | Death Metal | Севлиево | 2011 |
| Born For Vengeance | Metalcore | Русе | 2014 |
| BORNA | Metalcore | Русе | 2021 |
| Bourbon Street | Alternative Rock | Пловдив | 2013 |
| Boxer | Hard Rock/Blues Rock | София | 2002 |
| Boyan Bo | Acoustic Rock/Progressive Metal | Хърндън (САЩ)/София | 2011 |
| Boycott! | Anarcho-Punk | Варна | 2004 |
| Brain Donor | Heavy/Progressive Metal | Кърджали | 2012 |
| Brain Terror | Hardcore | Варна | 2011 |
| Brainstorm | Death Metal | Шумен | 1995 |
| Brazen Abbot | Hard Rock | Мариехамн (Финландия) | 1994 |
| Brazznaria | Alternative Rock | Бургас | 2016 |
| Breakaway | Hardcore | София | 2000 |
| Breaking Sunrise | Hard Rock | Пловдив | 2014 |
| Breakout | Alternative Rock | София | 2011 |
| Breakpoint | Alternative Metal | София | 2007 |
| Breathe | Thrash Metal | Монтана | 2001 |
| Bright Sight | Punk/Hardcore | София | 2009 |
| Bring It Back | Olcschool Hardcore | София | 2007 |
| Brodnik | Doom Metal | София | 2018 |
| Broken Windows | Progressive Metal | Пловдив | 1994 |
| Brond | Post Hardcore | София | 2012 |
| Brothers In Blood | Hardcore | Плевен/Хага (Холандия) | 1998 |
| Bruja | Sludge Metal | София | 2020 |
| Brutal Death | Death Metal | Благоеград | 1992 |
| Brutal'es Masacre's | Black/Death Metal | Добрич | 1994 |
| Buck's'Town | AOR/Country Rock | София | 1987 |
| Bulgarritory | Thrash Metal | Пловдив | 2017 |
| Bunch Of Assholes | Punk Rock | Пловдив | 2013 |
| Buried By Ignorance | Death Metal/Deathcore | София | 2010 |
| Burn This World | Heavy Metal | София | 2020 |
| Burning Hate | Death Metal | Пловдив | 2005 |
| Burning Necks | Heavy/Black Metal | Берковица | 2003 |