TMCA

TMCA may refer to:


 * Tauro-muricholic acid, a type of bile acid
 * The Medical Center of Aurora, in Aurora, Colorado
 * Total Museum of Contemporary Art, in Seoul, South Korea
 * Toyota Motor Corporation Australia, a subsidiary of Toyota Motor Corporation
 * TRNAMet cytidine acetyltransferase (TmcA), an enzyme
 * Tsing Ma Control Area, a subdivision of Hong Kong