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⁻¹
• A first year medical student
• MS-1 (spaceplane), a proposed US Spaceplane

Topics referred to by the same term

This disambiguation page lists articles associated with the same title formed as a letter–number combination.
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