THC is tetrahydrocannabinol, the main active chemical compound in cannabis.

THC or ThC may also refer to:

Arts, entertainment and media T.H.C. (band), an American trip hop band The H Collective, an American film company Texas Hippie Coalition, an American heavy metal band The Human Centipede (First Sequence), a 2009 Dutch horror film

Businesses and organizations Taiwan Halal Center, in Taipei, Taiwan Tenet Healthcare Corporation, US Texas Historical Commission, US Tower Hamlets College, in London, England Transport Holding Company, a British Government–owned company of the 1960s Thüringer HC, a German handball club

Science Temperate herbaceous clade, a monophyletic clade of legumes Tetrahydrochrysene, an estrogenic and antiestrogenic compound Thermohaline circulation, an ocean current Thorium(IV) carbide (ThC), an inorganic compound Total hydrocarbon content, measured using a flame ionization detector

Other uses Tuyamuyun Hydro Complex, interconnected reservoirs and canals bordering Turkmenistan and Uzbekistan