Bedrift R - Briskeby
- Roblab AS
- Røverstaden AS
- Robaczynski
- Roos AS
- Reppen AS
- Rapidly AS
- Røn Norge
- Red Cat DA
- Reverie Investments AS
- Roås Digital AS
- Reitan Or
- Rogstad International
- Røn Norge
- Rathke Produksjoner
- Riserva Invest AS
- Røa Invest AS
- Rocksta Holding AS
- R. Hellem
- Røa Invest Bolig AS
- Røa Invest Næring AS
- Royal Thai Embassy
- Røyken Næringspark Invest AS
- Revelsby Music Production
- Røa Invest Bygg AS
- REMA 1000 Briskeby
- Rosell Digital Media
- Reisel Berit Bild
- Royal Property Partners AS
- Rettsmedisin, Sidsel Rogde
- Rent Miljø Renhold Oslo AS
- Rocknroll Kitchen Trond Larsen
- Rita Millennia Engen Throndsen
- Rollingframe Productions Martin Sagstuen
- Revilla Fashion, spa & Massasjeterapi
- Rune W. Hviding Spesialist i Nevrologi
- Russisk Språk og Håndverk med J. Luse