Bedrift W - Mosjøen
- Wang AS
- Walle
- Watchara Bunrat
- Wias Ansatteforening
- Wulff Eiendom AS
- Wang Eiendom AS
- Willy Straum
- Wos Holding AS
- Westby Holding AS
- Wika Media AS
- Wika Musikkforlag
- Willy Olaussen
- Wist Avd Mosjøen
- Wiik Hue
- W.B Gym AS
- Wiik Søttar Service
- William Edvardsen Eiendom
- W & W Eiendom AS
- Wikenyoga Katrine Remmen Wiken
- Wangsvik Salg & Service
- Wjp William Johan Pettersen
- Widerøe Ground Handling AS Avd Mosjøen
- Wist Last & Buss AS
- Web Tech Design Geir Johnsen