TCMC

TCMC may refer to:


 * The Commonwealth Medical College, former name of Geisinger Commonwealth School of Medicine
 * Tri-City Medical Center, a hospital in Oceanside, California
 * TCMC, alternative abbreviation for the chemical DOTAM
 * The Twin Cities–Milwaukee–Chicago project, the name used during planning for the Borealis (train)
 * Thomson Components - Mostek Corporation (onetime subsidiary of Thomson Semiconducteurs, the semiconductor arm of France’s Thomson-CSF