2M

2M or 2-M may refer to:


 * 2m, or two metres
 * 2 million
 * Amateur radio 2-meter band
 * 2M (alliance), a container shipping industry alliance between Maersk Line and MSC
 * 2M (DOS), a DOS program that formats extra high capacity floppy disks
 * 2M TV, a Moroccan state-owned TV station
 * Moldavian Airlines, IATA airline designator 2M
 * a prefix used by the Two Micron All-Sky Survey (2MASS)