RBK may refer to:
- NYSE ticker symbol for Reebok sportswear company
- Robert Bosch Krankenhaus, a charitable hospital in Stuttgart, Germany
- Rockbank railway station, Melbourne
- Rosenborg BK (Rosenborg Ballklub), a Norwegian football club
- RBK-250, a Soviet-era cluster bomb
- RBK-500, a Soviet-era cluster bomb
- RBK Group, a Russian media group
- RBK TV, owned by the group
- RBK Daily, a newspaper published by the group
- IATA airport code for French Valley Airport