| Modern Obscure Music | — |
| Mogra Records | — |
| Mundo zurdo | — |
| Music Kool/Music Bus | — |
| Mésdemil | 2007 |
| Nation on Fire Records | — |
| Nines & Helen | — |
| No More Discos | — |
| Ocean Club | 2017 |
| Oihuka | 1987 |
| Orgànic Records | — |
| Out-Sider | — |
| Pandora Mirabilia | — |
| Perdición | — |
| Picap | 1984 |
| Pissfaced Fetus Production | 2019 |
| Planeta Agostini | — |
| Plastic Disc | 1995 |
| Pneuma | — |
| Producciones AR | — |
| Producciones Efímeras | — |
| Producciones Malditas | — |
| Publicacions de l'Abadia de Montserrat | 1498 |
| Publimáster | 1992 |
| Qabalah Records | — |
| Radiation Records | — |
| Radikal Records | — |
| RadiX Records | diciembre 2009 |
| Rap Solo | — |
| Redstar73 | — |
| RGB Suports | — |
| Robot Innocent Companyia Discogràfica | — |
| Rock Estatal Records | 9 de enero de 2014 |
| Salseta discos | 1986 |
| Satie Produccions Audiovisuals | — |
| Savia Records | — |
| Sinedín Music | — |
| Skaidimusic | — |
| Sleazy Records | — |
| Slow Coloured Records | — |
| Snap!! Records | — |
| SonarMusic | — |
| Sonifolk | — |
| Soundframe | 11 de mayo de 2017 |
| Spicnic | — |
| Suara | 2008 |
| Talka Records | — |
| Temazo.org | — |