[M-O]
- Maetrixsolution
- Magnatune
- Mahorka
- mastik
- Menthe de Chat
- MicrobioRecords
- midinette records
- Miga
- miklataklitim
- MiMi Records
- minlove
- minusQ
- Mirakel Musik
- mixomat-recordings
- Mmmph
- Monohm
- Monokom Records
- montgo records
- MoodsPlateau
- mp3death
- Música para espías
- Musicartistry Rec.
- musiciam
- Musictrade
- -N
- namshub records
- Natural Media
- Ndorphin.org
- NenfiirSadefrex
- neureal
- Neverkink
- Nexsound
- Nishi
- Nocharizma R.
- noiseusse
- No-Response.org
- no-response.org
- Nubreaks.Net
- nuchoon
- Nuten
- NVR
- O Sol Moi O Pai
- Obscure
- Offaudio
- Often Gruven recordings
- Ogredung
- One
- ON-Mix productions
- op3n.net
- OpenLab Records
- Orange Grove Records
- Othello
- Otium netlabel
- Ottbinare