Martin Brennan may refer to:Martin Brennan (1903–1967), Irish medical practitioner and Fianna Fáil politician, TD from 1938 to 1948 Martin Brennan (engineer), computer engineer who worked for Sinclair Research and Atari Martin A. Brennan (1879–1941), U.S. Representative from Illinois Martin Brennan (hurler), Irish retired sportsman Martin Stanislaus Brennan (1845–1927), American Roman Catholic priest and scientist Martin Brennan (footballer), English footballer Martin Brennan (character), a fictional character created by the comedian Steve Coogan