CSMC may refer to:

Confederate States Marine Corps, a branch of the Confederate States Navy during the American Civil War Command Sergeants Major Course, a career development course of the United States Army Cedars-Sinai Medical Center, a hospital in Los Angeles, California Chaim Sheba Medical Center, the largest hospital in Israel. Central Saint Martins College of Art and Design, famous Art School in London Cave Story Modding Community, a dedicated community of individuals focused on modding Cave Story (2004).