SRB or Srb may refer to:
Places
- Serbia (ISO 3166-1 alpha-3 country code <code>SRB</code>), a country in Central/Southeastern Europe <!--see ISO 3166-1 alpha-3-->
- Srb, a village in Croatia
Organizations
- State Research Bureau (organisation), former Ugandan intelligence agency
- Single Resolution Board, EU banking authority
Science and technology
- Storage Resource Broker, a computer data grid management system
- Sulfate-reducing bacteria
- Sulfur-reducing bacteria
- Service Request Block, in IBM operating systems
- Solid rocket booster
- SRb, a subtype of semiregular variable star
- Swedish Red-and-White or ', a breed of cattle
Other uses
- Sonic's Rendezvous Band, Ann Arbor, Michigan, US
- Srb (surname)
- Sora language (ISO 639-3 code <code>srb</code>), a Munda language of India