MS2

MS2 may refer to:

• Mass Effect 2
• Bacteriophage MS2
• tandem mass spectrometry (MS²)
• a type of trams of Putilov plant
• Mighty Servant 2, a 29,000-ton semi-submersible heavy-lift ship
• Lockheed Martin Maritime Systems & Sensors (LM MS2), a Lockheed Martin business segment
• Southern Railway (U.S.) Class Ms-2, a duplex locomotive for the Southern Railways.
• MegaSquirt2, a type of MegaSquirt electronic fuel injection controller

MS-2 may refer to:

• Mississippi's 2nd congressional district
• Mississippi Highway 2
• Project MS-2, the name given to a con perpetrated in 2002

ms−2 may refer to:

• Metre per second squared, the SI derived unit of acceleration.