3B
- 1965 North Indian Ocean cyclone season
- 1966 North Indian Ocean cyclone season
- 1967 North Indian Ocean cyclone season
- 1971 North Indian Ocean cyclone season
- 1974 North Indian Ocean cyclone season
- 1975 North Indian Ocean cyclone season
- 1978 North Indian Ocean cyclone season
- 1988 North Indian Ocean cyclone season
- 1990 North Indian Ocean cyclone season
- 1995 North Indian Ocean cyclone season
- 1999 North Indian Ocean cyclone season
- 2003 North Indian Ocean cyclone season
- 3B Computers
- 3B Junior
- 3B Lab
- B3 (disambiguation)
- BBB (disambiguation)
- Big Beautiful Bill
- Cyclone 03B (2023)
- EB (disambiguation)
- Third baseman
- Three Bs
- Triple (baseball)
- Tropical Cyclone 03B (2007)