M51 or M-51 may refer to:
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M-51 (Michigan highway), a state highway in Michigan
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M51 highway (Russia)
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M51 (Cape Town)
The City of Cape Town (Cape Town metropolitan area) like most South African metropolitan areas, uses metropolitan or "M" routes for important intra-city routes, a layer below national (N) roads and regional (R) roads. Each city's M roads are in ...
, a Metropolitan Route in Cape Town, South Africa
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M51 Skysweeper, an anti-aircraft gun
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M51 MACI mine
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M51 SLBM
The M51 SLBM is a French submarine-launched ballistic missile, built by ArianeGroup, and deployed with the French Navy. Designed to replace the M45 SLBM (in French terminology the MSBS – ''Mer-Sol-Balistique-Stratégique'' "Sea-ground-Strategic ...
, a French nuclear ballistic missile
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BMW M51
The BMW M51 is an inline-6 cylinder Diesel engine produced by the Oberösterreich, Upper Austrian BMW plant in Steyr from July 1991 through February 2000. Its predecessor is the BMW M21; the successor is the BMW M57.
Description
The M51 is a w ...
, a 1991 straight-6 Diesel engine
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Sherman M-51, an Israeli modification of American M4 Sherman tank
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Eidgenössischer Stutzer 1851, a historical service rifle of the Swiss Army
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Messier 51 Messier may refer to:
People with the surname
*Ashley Messier (born 2002), Canadian ice hockey player
*Charles Messier (1730–1817), French astronomer
* Doug Messier (born 1936), Canadian ice hockey player and coach
* Éric Messier (born 1973), Ca ...
, a spiral galaxy also known as the Whirlpool Galaxy
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Samsung Galaxy M51, a smartphone released in 2020
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