Thomas McCormack may refer to:
Thomas McCormack (California politician) (1873–1949), Canada-born California politician Thomas McCormack (artist) (1883–1973), New Zealand artist Tom McCormack (Erin's Own hurler) (1888–1959), Irish hurler for Kilkenny and Erin's Own Tom McCormack (footballer), New Zealand association footballer Thomas J. McCormack (1922–1998), member of the Pennsylvania State Senate and the Pennsylvania House of Representatives Thomas McCormack (writer) (1932–2024), author, playwright and former book-publishing executive Tom McCormack (James Stephens hurler) (born 1953), Irish hurler for Kilkenny and James Stephens