Bedrift M - Mosterhamn
- Mapcon AS
- Møllevik AS
- Moongroove AS
- Møyro AS
- Manacon AS
- Morten Aunrønning
- Moster Håndverksted
- Moster Hårdesign AS
- Mosterhamn Legekontor
- Motvind Bømlo
- Moster Båtlag
- Maria Grindheim
- Mostrahuset Totland
- Mostrahusets Venner
- Mostrahusets Venner
- Morten Ersland
- Moster Ungdomsklubb
- Mosterhamn Veteranbåtlag
- Moster Båtlag
- Moster Indremisjon
- Moster Drill
- Mosterhamn Veteranbåtlag
- Maok Lidal
- Moster Idrettslag
- Moster Kalk AS
- Moster Eiendom AS
- Marik Holding AS
- Moster Holding AS
- Moster Rør AS
- Moster Skulekorps
- Moster Maskin AS
- Moster Sogelag
- Moster Elektro AS
- Motvind Bømlo
- Moster 2024 AS
- Moster Skule
- Moster Amfi
- Martins Dainis
- Moster Amfi AS
- Moster Legekontor
- Moster Grendautval
- Moster Grendapark
- Moster Bmx Klubb
- Moster Cafe AS Konkursbo
- Moster Cafe AS Konkursbo
- Moster Skule SFO
- Moster Elektro Velferdsklubb
- Michael Deegan McGurk
- Myro Mek AS Tvangsavviklingsbo
- Myro Mek AS Tvangsavviklingsbo
- Morten Steig Saue
- Martin Lønning Invest AS
- Moster Bil AS (SjekkPunkt)
- Miracle Connect Norge
- Miracle Connect Norge
- Miljøpartiet Dei Grøne Bømlo
- Mosterhamn Post i Butikk
- Moster Treningsstudio Kristoffer Mæland