TMC
TMC may stand for:

Companies and brands
Thinking Machines Corporation, a defunct supercomputer company
Toyota Motor Corporation, a Japanese automobile manufacturer
 Trans Mountain Corporation
Transportation Management Center, a division of American shipping company C.H. Robinson
Transportation Manufacturing Corporation, a defunct bus manufacturer based in Roswell, New Mexico
Triumph Motor Company, a defunct British automotive manufacturer

Educational and medical institutions
Tehran Monolingual Corpus, a Persian monolingual text corpus, Iran

Texas Medical Center, a medical institution

Thanjavur Medical College, a golden jubilee college in Tamil Nadu, India
Thomson Medical Centre, a private hospital in Novena, Singapore
Thurgood Marshall College, a college within University of California, San Diego
Thursday Morning Club, a not-for-profit organization in Madison, New Jersey

Tripura Medical College & Dr. B.R. Ambedkar Memorial Teaching Hospital, India

Tucson Medical Center, a not-for-profit community hospital
Thomas More College (South Africa), a leading private school in South Africa
Washtenaw Technical Middle College

Gaming
The Legend of Zelda: The Minish Cap, a video game
The Mud Connector, a Web portal site covering MUDs, text-based online role-playing games

Locations
Trece Martires, a city in Cavite, Philippines

Television
The Movie Channel, a cable television network
Télé Monte Carlo, French language television channel in Monaco
La7, Italian private television channel formerly known as Telemontecarlo
Tagalized Movie Channel, a Philippine cable channel

Politics
Trinamool Congress, a state political party in West Bengal, India
Tamil Maanila Congress, a political party in Tamil Nadu, India
Transitional Military Council (disambiguation), interim governments in Chad and Sudan

Other uses
Taipei Music Center, performing arts and cultural center in Taipei, Taiwan
The Mandela Catalogue, analog horror web series
Thomas & Mack Center, an indoor arena on the campus of the University of Nevada, Las Vegas opened in 1983
Traffic Message Channel, a technology for delivering traffic and travel information to drivers
Travel management company, managing corporate travel
Transportation Materiel Command, a unit of the United States Army until 1962
Trapeziometacarpal joint, a joint in the thumb
 Tmcft (TMC, tmc) (thousand million cubic feet), a volume measurement of water
Run TMC, a high-scoring trio of teammates in the National Basketball Association from 1989 to 1991