Thomas Hayes may refer to:
Law and politics Thomas W. Hayes, California State Treasurer Thomas Hayes (Texas politician) in 14th and twenty-first Texas Legislature Thomas Hayes (Australian politician) (1890–1967), member in the Victorian Legislative Assembly Thomas L. Hayes (1926/7–1987), Vermont Supreme Court Justice Thomas Hayes (Lord Mayor) (died 1617), English merchant and Lord Mayor of London Thomas Gordon Hayes (1844–1915), politician and lawyer in Maryland
Sportspeople Thomas Hayes (boxer) (1981–2025), American heavyweight boxer Tommy Hayes (rugby union, born 1973), Cook Island rugby union player Tommy Hayes (rugby union, born 1980), Irish rugby union player Thomas P. Hayes, thoroughbred racehorse trainer who won the Kentucky Derby and the Preakness Stakes
Sailors Thomas Hayes (Medal of Honor) (1840–1914), American Civil War sailor and Medal of Honor recipient John Brown (sailor) (Thomas Hayes, 1826–1883), American Civil War sailor and Medal of Honor recipient
Others Thomas Hayes (San Francisco landowner) (1820–1868), land owner in San Francisco Thomas Hayes (bishop) (1847–1904), Anglican bishop Thomas Highs (1718–1803), sometimes Hayes, reed-maker and manufacturer of cotton carding and spinning engines Thomas Hayes (trader), former UBS trader, convicted in connection with the Libor scandal Thomas J. Hayes III (1914–2004), United States Army general Thomas Hayes (actor) (born 1997), Norwegian actor Thomas L. Hayes Jr., United States Army Air Forces flying ace
See also Tom Hayes (disambiguation) Tommy Hays (1929–2023), guitarist and vocalist Thomas Hay (disambiguation) Thomas Heyes, publisher-bookseller