Martin Nally (1882 – 1 August 1966) was an Irish politician and farmer. He was first elected to Dáil Éireann as a Cumann na nGaedheal Teachta Dála (TD) for the Mayo South constituency at the 1923 general election. He was re-elected at each subsequent election until lost his seat at the 1943 general election. From the 1937 general election onwards, he was elected as a Fine Gael TD.