Thomas Welch (disambiguation)

Thomas Welch (1742–1816) was a surveyor and judge in Upper Canada

Thomas Welch may also refer to:


 * Thomas Bramwell Welch (1825–1903), discoverer of the pasteurization process to prevent the fermentation of grape juice
 * Thomas Welch (American football) (born 1987), NFL offensive tackle
 * Thomas Welch (cricketer) (1906–1972), English cricketer
 * Thomas Anthony Welch (1884–1959), American prelate of the Roman Catholic Church
 * Thomas Vincent Welch (1850–1903), New York State Assemblyman
 * Tom Welch (politician), American politician in Montana
 * Tom Welch (curler) in WFG Tankard