TMC may stand for: Companies and brands. Thinking Machines Corporation, a defunct supercomputer company. Toyota Motor Corporation, a Japanese automobile manufacturer. Toshiba Memory Corporation. 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.
https://en.wikipedia.org/wiki/TMC