MS1 may refer to:
- FMA Ae. M.S.1, an air ambulance version of the 1932 Argentine FMA AeC.2 utility aircraft
- MS1, the first device in tandem mass spectrometry
MS-1 may refer to:
- Mercury-Scout 1, a 1961 satellite
- Mississippi's 1st congressional district
- Mississippi Highway 1
- Roland MS-1 Digital Sampler
- T-18 tank
- A type of Trams of Putilov plant
- MegaSquirt 'n Spark-Extra (MS1/Extra), a type of MegaSquirt electronic fuel injection controller
- MS-1 (wrestler), Mexican professional wrestler
- Metres per second, the SI unit of velocity, written as ms
- A first year medical student
- MS-1 (spaceplane), a proposed US Spaceplane
Topics referred to by the same termThis disambiguation page lists articles associated with the same title formed as a letter–number combination.If an internal link led you here, you may wish to change the link to point directly to the intended article. Category: