Com or COM may refer to: Computing COM (hardware interface), a serial port interface on IBM PC-compatible computers COM file, or .com file, short for "command", a file extension for an executable file in MS-DOS .com, an Internet top-level domain, originally short for "commercial" Component Object Model, a Microsoft software interface technology Computer-on-module, a type of single-board computer Transport Comair (USA), an airline which was a wholly owned subsidiary of Delta Air Lines by ICAO airline designator Commonwealth MRT station, a Mass Rapid Transit station in Singapore by MRT station abbreviation Other COM (manga magazine) Cốm, green rice dish in Vietnam Common rail (electricity), a common path of currents in an electronic circuit, often for the ground Center of mass Center-of-momentum frame Coma Berenices (constellation), standard astronomical abbreviation Comoros, ISO 3166-1 alpha-3 country code College of Marin, a community college in Marin County, California College of the Mainland, a community college in Texas City, Texas Collectivité d'outre-mer, a French overseas collectivity, or first-order administrative division Concerned Officers Movement, anti-war organization Commander of the Order of Merit of the Police Forces, Canadian decoration post-nominal letters Either of two figures named Com in the Book of Mormon: an early Jaredite king, son of Coriantum; and a late Jaredite king Como, a city and comune in Lombardy, Italy, in Romansh language See also Comm (disambiguation) Command (disambiguation) dot-com (disambiguation)