M97 or M-97 may refer to:

• Messier 97, a planetary nebula in the constellation Ursa Major
• Winchester Model 1897, a pump action shotgun
• M-97 (Michigan highway), a state highway in Michigan
• Morehead-Rowan County Clyde A. Thomas Regional Airport (FAA LID: M97), a public airport located northwest of Morehead, Kentucky, United States

• John Cousen
• John Coutinho
• John Coutts (merchant)
• John Couture
• John Coventre
• John Coventre (died c.1430)
• John Coventre (died c. 1430)
• John Coventre (disambiguation)
• John Coventre I
• John Coventry (died 1682)
• John Coventry (disambiguation)
• John Coventry (MP)
• John Coventry (Royalist)
• John Covert
• John Covert Boyd
• John Covert (by 1501-1558)
• John Covert (by 1501–1558)
• John Covert (disambiguation)
• John Covington
• John Covington Moore House
• John Cowan (1866-1953)
• John Cowan (computer scientist)
• John Cowan (disambiguation)
• John Cowan (footballer)
• John Cowan (musician)