M61 or M-61 may refer to:

In transportation:

• M61 motorway, a motorway in England
• M-61 (Michigan highway), a state highway in Michigan
• M61, a class of locomotives built by NOHAB

In science:

• Messier 61 (M61), a spiral galaxy in the Virgo Cluster

In firearms and military equipment:

• M61 Vulcan, a rotary cannon developed for the United States Armed Forces and used in fighter aircraft and other applications
• M61 (grenade), a fragmentation hand grenade used by the United States Armed Forces
• M61 Skorpion, a Yugoslav designation for the CZ-Scorpion pistol
• M61 gas mask, a gas mask used by the Finnish Defence Forces of which three variants were made

Topics referred to by the same term

This disambiguation page lists articles associated with the same title formed as a letter–number combination.
If an internal link led you here, you may wish to change the link to point directly to the intended article.