Thomas McCormack may refer to:

• Thomas McCormack (writer) (born 1932), author, playwright and former book-publishing executive
• Thomas McCormack (California politician), Canada-born California politician
• Thomas Arthur McCormack (1883–1973), New Zealand artist
• Thomas J. McCormack (1922–1998), member of the Pennsylvania State Senate and the Pennsylvania House of Representatives
• Tom McCormack (born 1953), retired Irish hurler
• Tom McCormack (footballer), former New Zealand footballer
• Tom McCormick (boxer), British boxing champion

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