M61 or M-61 may refer to:
In transportation:
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M61 motorway, a motorway in England
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M-61 (Michigan highway)
M-61 is a state trunkline highway in the US state of Michigan that runs between Marion and Standish. The highway runs along the boundary area between Northern Michigan and Central Michigan in the Lower Peninsula. M-61 runs through rural forestla ...
, a state highway in Michigan
*M61, a class of locomotives built by
NOHAB
In science:
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Messier 61
Messier 61 (also known as M61 or NGC 4303) is an intermediate barred spiral galaxy in the Virgo Cluster of galaxies. It was first discovered by Barnaba Oriani on May 5, 1779, six days before Charles Messier discovered the same galaxy. Messier h ...
(M61), a spiral galaxy in the Virgo Cluster
In firearms and military equipment:
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M61 Vulcan, a rotary cannon developed for the United States Armed Forces and used in fighter aircraft and other applications
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M61 (grenade), a fragmentation hand grenade used by the United States Armed Forces
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M61 Skorpion, a Yugoslav designation for the CZ-Scorpion pistol
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M61 gas mask
The M-61 is a Finnish gas mask manufactured by Nokia since the 1960s up to the 1980s. It was the standard issue gas mask for the Finnish Defense Forces, but was replaced by the updated M-95 in the 1990s. It is a side loading mask (meaning the fil ...
, a gas mask used by the Finnish Defence Forces of which three variants were made
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