LB, lb or lb. may refer to:
LBC (originally the London Broadcasting Company) is a London-based national phone-in and talk radio station.
The LBC Crew (Long Beach City Crew) is a collective of Long Beach-based rappers. They were the first act to be executively-produced by Snoop Dogg.
The LBD-1 Gargoyle (later KSD-1, KUD-1 and RTV-N-2) was an American air-to-surface missile developed during World War II by McDonnell Aircraft for the United States Navy.
LBV 1806-20 is a candidate luminous blue variable (LBV) and likely binary star located nearly 40,000 light-years from the Sun, towards the center of the Milky Way.