Thomas Quinn may refer to:
Thomas Quinn (author) (born 1951), author of historical novels
Thomas Quinn (MP) (1838–1897), Irish Nationalist politician and builder
Thomas C. Quinn, American physician and infectious disease researcher
T. Vincent Quinn (1903–1982), U.S. representative from New York
T. J. Quinn (Thomas Joseph Quinn), American investigative reporter
Thomas Emmett Quinn, Canadian ice hockey executive, coach and referee