- M. R. Moose
- Mac Umba
- Maeve Mackinnon
- Maggie Reilly
- Maggie Sansone
- Mairearad Green
- Majella
- Makfolk
- Making County
- MAL'FIN
- Malcolm Stitt
- Manus McGuire
- Marcelo Zarvos
- Marcos Bárcena
- Marcos Bárcena y Miguel Cadavieco
- Marcos Ferreira Caco Poeta
- Margaret Barry
- Margaret Healy
- Margaret Stewart
- Margie Butler
- Margo O'Donnell
- Marie Breatnach
- Marie Fielding
- Mario Gil Works
- Mark Haines
- Mark Sullivan
- Martin Carthy with Dave Swarbrick
- Martin Furey
- Martin Hayes
- Martin Simpson
- Martyn Bennett
- Mary Black
- Mary Strachan
- Matias Campian
- Matt Molloy
- Matthew Maclennan Scottish Dance Band
- Maxim Cormier
- Maximam Lucem
- Mcd Sprite
- McDermott's 2 Hours
- Medwyn Goodall
- Megan and Shane
- Meibion Twm o'r Nant
- Meic Stevens
- Meinir Gwilym
- Melu
- MetalWaska
- Mhairi Hall Trio
- Michael Hamilton
- Michael M. Jung
- Michael Mitchell
- Michael O'Shea
- Michael Mitchell
- Michael O'Shea
- Michael Popp
- Mick Foster
- Mick Moloney
- Mick Moloney and Eugene O'Donnell
- Milladoiro
- Missão Mãe de Pentecostes
- Mjuk Music
- Molly's Chamber
- Moloney O'Connell & Keane
- Monika Stadler
- Monster Fiddler
- Moonloom
- Moraes Junior
- Morgan Of Glencoe
- Morgenrot World Music
- Morrigan
- Mouth Music
- Moving Hearts
- Moya Brennan
- Mr. Irish Bastard
- Muhammad Manzoor
- Muireann Nic Amhlaoibh
- Musical Artizan