TRB may refer to:
Funnelbeaker culture (Trichterbecherkultur in German), a megalithic culture Tap, rack, bang, a firearm technique Terminating Reliable Broadcast, in distributed computing Toll Regulatory Board, a Philippine government agency Tom Robinson Band, a British rock band Transportation Research Board, a U.S. advisory board TRB (writer), a ghostwriter name used in The New Republic magazine trb., a musical abbreviation for trombone Trump Rebate Banking system, a scam targeted at fans of Donald Trump