1M

1M or 1-M may refer to:


 * 1m or 1 metre
 * 1M as one million
 * Dinas Rekani
 * Astra 1M satellite
 * Mars 1M spacecraft
 * Northrop N-1M, an American experimental aircraft
 * Globus-1M No.12L, a Russian military communications satellite
 * UH-1M, model of Bell UH-1 Iroquois
 * TAC-1M, variant of the semi-automatic carbine Demro TAC-1
 * SPP-1M, a variant of the SPP-1 underwater pistol
 * PDM-1M mine, a variant of the PDM series of amphibious mines
 * VO-1M, an early designation of the Marine Attack Squadron VMA-231
 * YaK-1M, a variant of the Yakovlev Yak-1
 * SSH 1M (WA), an early name of Washington State Route 121
 * BWP-1M, a BMP-1 variant
 * BMW 1M, a BMW 1 Series M Coupe