Bedrift M - Hafslundsøy
- Minimaskiner AS
- Minilokaler AS
- Morten Skute
- Mr. Liabø
- Mito Import DA
- McWere Helsetjenester AS
- Mobråten Medispa AS
- Maeddiis Bugge
- Maksym Lehkobyt
- Motorsport Event AS
- Mm Snekker AS
- Mestermur Sarpsborg AS
- Mesterbygg Utleie AS
- Mesterbygg Sarpsborg AS
- Malerfirmaet Gåserød AS
- Mental Helse Fredrikstad
- Mikkel Rasmussen Hofplass
- Maia Nilsen Coaching
- Mental Helse Østfold
- Mental Helse Østfold
- Monique Music Eliassen
- Malerfirmaet Svein Gåserød
- Malermester Martin Holøs AS
- Meli Bjørn-Rune
- Mental Helse Fredrikstad
- Martin Foss Holding AS
- M&V Transport Novoselski
- Martin Monsen Berg Design
- Maling & Bygg Ghaznavi
- Mierzejewska Koldej Hr-Tjenester
- Makeup Artist Tonje Bøe
- Maruwa Anlegg & Eiendom AS
- Maruwa Anlegg & Eiendom AS
- Malermester M.K Magne Klavestad
- Musikkens Venner i Sarpsborg og Omegn
- Myklebust Marius Johan Liam Kobresia Sortland