Bedrift B - Østerås
- Brynildsen & Co
- Bk4b
- Bink AS
- Bilpleien AS
- Barretten AS
- Barnegat AS
- Bilpleien AS
- Birgit Urstad
- Budal Sportmanagement
- Berge Consulting
- Benjamin Lindseth
- Børresen Tannhelsetjeneste ANS
- Brauer Technologies
- Bjerch Georg
- Byggservice AS Peters
- Breistøl Gudrun
- BMW Bygget AS
- Bærum Spellemannslag
- Bona Holding AS
- Buds Invest AS
- Bakerens Glutenfrie AS
- Barra Holding AS
- Baker Holding AS
- Bård Holding AS
- Barra Invest AS
- Beate Riiser
- Ballerud Hagemøbler AS
- Borgen Gilbert
- Bjørn Hallmo AS
- Bjørklund Østerås
- Buskerud Varmepumpeservice AS
- Bøhler Holding AS
- Bidco Play AS
- Ballerud.com
- Bærum Kjøkkensenter AS
- Blikra & Søderblom AS
- Brithén Tekniske Tjenester
- Bloomi Sylwia Plutowicz
- Bobship Bjarte Bøe
- Butikkdrift Marianne Pedersen
- Baker Hansen AS Avd Lager
- Blikra & Søderblom AS
- Bygg Service Kowal AS
- Barn i Lek AS
- Bjerch & Krefting AS
- Borthen Ship Management AS
- Baker Hansens Glutenfrie AS
- Brukerforeningen Østerås Seniorsenter (Bøs)
- Berg Tekst & Ball
- Bakken Litt Av Hvert
- Bl Gaver & Profilering AS
- Brukerforeningen Østerås Seniorsenter (Bøs)
- Bjerch & Krefting Forvaltning AS
- Baker Hansen Grini bakeriutsalg
- Bergljot og Einar Lundebys Minnefond
- Black Cat Kaffe og Tehus AS
- Back On Track (Norge) Nina Bakstad
- Black Cat Kaffe og Tehus AS Avd Grini Næringspark
- Bærum Kommune Hjemmebaserte Tjenester Østerås Distrikt Avd Eiksmarka