Mairtin Thornton (died 1984) was an Irish heavyweight boxer in the 1940s.

Thornton was a native of Spiddal, Connemara, County Galway.

He fought Bruce Woodcock for the British Commonwealth Heavyweight title in 1945.

[2] When he retired from boxing he ran a pub in Spiddal, County Galway.

This biographical article related to an Irish boxer is a stub.