TCM may mean:

• Traditional Chinese Medicine
• Turner Classic Movies, a cable TV channel owned by Time Warner which primarily features classic MGM, RKO and Warner Brothers films
• trajectory correction maneuver — see Mars Climate Orbiter

• tightly-coupled memory, computer memory that is shared between multiple processors in a multi-processor system
• Trellis modulation, an efficient signal modulation scheme for telecommunications, often referred to as Trellis coded modulation (TCM)
• Trusted Computing Module, another name for the Trusted Platform Module, a microprocessor that implements trusted computing
• Total Consumer Market, a phrase used in the description of sales of, eg., books
• Total catchment management, also known as Drainage Basin or watershed in North America
• Total Commander, a shareware file manager for Microsoft Windows.

Other

• Texas Chainsaw Massacre the classic horror movie
• The Crystal Method, an electronic music group
• The Class Menagerie, a webcomic
• Transportas Companhia de Macau, a bus operator in Macao
• The Corporate Machine, a personal computer game made by Stardock

TCM | TCM