L
| L'Ange Sauvage | Alternative Rock | София | 2020 |
| L.S.D.D. | Progressive Power Metal | Варна | 2016 |
| La Muchedumbre | Ska/Punk Rock | София | 2005 |
| Lab For Madness | Crossover/Thrash Metal | Вършец | 2009 |
| LAGG | Alternative Rock | Бургас | 2014 |
| Lake Of Flames | Alternative Gothic Metal | В.Търново/Ст.Загора | 2006 |
| Lampa Inc. | Alternative Rock | Шумен | 2021 |
| Lapsus Linguae | Crust/Hardcore Punk | София | 2011 |
| Last Hope | Hardcore | София | 1994 |
| Last Minute Loss | Metalcore | Плевен | 2011 |
| Last Remains | Metalcore/Deathcore | Русе | 2008 |
| Last Season | Grunge | Варна | 1995 |
| LaText | Avantgarde Rock | София | 2012 |
| Lava | Thrash Metal | Червен бряг | 2011 |
| Lavender Haze | Progressive Metal | Габрово | 1993 |
| Lazy Dynamics | Psychedelic/Stoner Rock | Перник | 2020 |
| Le'Push | Acoustic Pop Rock | Пловдив | 2017 |
| Leever | Alternative Rock | София | 2015 |
| Lek City Case | Alternative Rock | Бургас | 2014 |
| Lellers | Hard Rock | София | 2014 |
| Leprosy | Death Metal | Стара Загора | 1991 |
| Leprosy | Death Metal/Grindcore | Кърджали | 1990 |
| Let Them Die | Metalcore | София | 2006 |
| Lidum Merrko | Folk Alternative Rock | София | 2013 |
| LieVeiL | Melodic Progressive Death Metal | Варна | 2010 |
| Life Light | Alternative Rock | Пловдив | 2015 |
| Life's A Beach | Punk Rock | Каварна | 2023 |
| Light The Torch | Thrash Metal | София | 2006 |
| Light Vocal Group | Synth Pop | Радомир | 2008 |
| Linoleum | Punk Rock | Пловдив | 2001 |
| LiqueScent | Alternative Rock | Враца | 2016 |
| Liquid Melons | Psychedelic Rock/Blues Rock | София | 2016 |
| Liquid Pension | Progressive Rock | София | 2005 |
| Litera Theta | Gothic Metal | Варна | 2001 |
| Little Bitch Company | Crossover/Alternative | Стара Загора | 2004 |
| Living Hope | Speed Metal | Лом | 1992 |
| Loners On The Hill | Heavy/Alternative/Thrash/Death Metal | Пловдив | 2017 |
| Lords | Symphonic Metal | София | 2022 |
| Lost | Blues/Blues Rock | Варна | 1995 |
| Lost Humanity | Progressive Rock/Jazz Rock | София | 2019 |
| Lost In Eternity | Metalcore | София | 2015 |
| Lost Memories | Alternative Metal | Бургас | 2020 |
| Lost Suicidal Drunks | Groove Metal | София | 2019 |
| Lotza Haters | Beatdown Hardcore | София | 2013 |
| Loud | Pop Rock/Alternative | Бургас/София | 2014 |
| Lovers Of The Bomb | Alternative Rock | София | 2002 |
| low-key | Psychedelic Rock/Shoegaze | Пловдив | 2023 |
| Löwenblut | Raw Black Metal | София | 2025 |
| Lucifer | Hard Rock | Варна | 1980 |
| Lucky Number Nick | Alternative Surf Rock | София | 2013 |
| Lucretia | Thrash/Death Metal | Благоевград | 1992 |
| Luminal | Thrash Metal | София | 1987 |
| Luminous | Hard Rock | София | 2010 |
| Lunatic Theatre | Post Punk | София | 2017 |
| Lynch | Punk/Ska | Шумен | 2000 |
| LZ | Pop Rock | София | 1973 |