JCM

JCM may refer to:

People

 * James Clerk Maxwell (1831–1879), Scottish physicist
 * John Cougar Mellencamp (born 1951), American singer

Science and technology

 * Japan Collection of Microorganisms
 * Jaynes-Cummings model
 * Journal of Clinical Microbiology
 * Journal of Communications
 * AGM-169 Joint Common Missile
 * JunoCam, a camera on a planned space probe to the planet Jupiter

Other uses

 * Jewish Children's Museum
 * Jackson Central-Merry High School, a public high school in Jackson, Tennessee
 * Joint Council of Municipalities