Brett Kimberlin (born 1954) is an American political activist who was convicted in 1980 on drug charges and of perpetrating the 1978 Speedway bombings. Since his release from prison, Kimberlin has co-founded the non-profit Justice Through Music Project and the activist organization Velvet Revolution. He has also been involved in various legal disputes, including those associated with a claim that he supplied marijuana to Dan Quayle.