TC3 may refer to:
Tc3 transposon, a transposon in Caenorhabditis elegans 2008 TC3, a meteoroid that entered Earth's atmosphere on October 7, 2008 Tha Carter III, a studio album by American rapper Lil Wayne Tompkins Cortland Community College, also abbreviated as TC3, a college in Dryden, New York, United States Time Crisis 3, the third instalment of the Time Crisis arcade game series TC3 Touring Car, a touring car racing specification TC3 International Series, an international touring car series Tactical Combat Casualty Care, a standard of care in prehospital battlefield medicine Plymouth Horizon TC3, an automobile manufactured by Chrysler Corporation