MS2 or MS-2 may refer to:
Science and technology Bacteriophage MS2 Metre per second squared (ms−2; m/s²), a unit of acceleration Lockheed Martin Maritime Systems & Sensors Tandem mass spectrometry (MS²) MegaSquirt2, a type of MegaSquirt electronic fuel injection controller ms2, an open source molecular simulation software
Transport Mighty Servant 2, a heavy-lift ship Mississippi Highway 2 Progress MS-02, a spacecraft Soyuz MS-02, a spacecraft Southern Railway (U.S.) Class Ms-2, a locomotive
Video games MapleStory 2 Mass Effect 2 Metal Slug 2
Other uses Mississippi's 2nd congressional district Project MS-2, a con perpetrated in 2002
See also
MS-II, a proposed rocket stage
MS 2000 (disambiguation) MS20 (disambiguation) MS 22 (disambiguation) MSMS (disambiguation) MSS (disambiguation) MS (disambiguation) 2 (disambiguation)