Thomas Harrison

• Thomas Harrison (soldier) (1606–1660), sided with Parliament in the English Civil War
• Thomas Harrison (minister) (1619–1682), English nonconformist minister, active in Virginia and Ireland
• Thomas Harrison (Royal Navy officer), British naval officer and Envoy Extraordinary to the Republic of Genoa
• Thomas Harrison (architect) (1744–1829), English architect and bridge engineer
• Thomas Harrison (general) (1823–1891), Confederate States Army brigadier general, district judge
• Thomas Harrison (translator) (1555–1631), English Puritan scholar and a translator for the King James Version of the Bible
• Thomas Elliot Harrison (1808–1888), civil engineer
• Thomas W. Harrison (1856–1935), U.S. Representative from Virginia (second name Walter; had a cousin Thomas Willoughby Harrison (1824–1910) West Virginia judge
• Thomas Harrison (1704–1785), founder of Harrisonburg, Virginia
• Thomas Harrison (American diplomat) diplomat and American Ambassador to Egypt
• Thomas Sinclair Harrison (1898–?), South African World War I flying ace
• Thomas Harrison (footballer) (1867–1942), English footballer for Aston Villa
• Thomas Harrison (cyclist) (born 1942), Australian cyclist
• T. Alexander Harrison (1853–1930), American artist
• Tom Harrison (baseball) (born 1945), baseball pitcher
• Tom Harrison (cricketer) (born 1971), English cricketer
• Tom Harrison (musician) (born 1985), British jazz musician
• Tom Harrison (politician) (1864–1944), Australian politician
• Tommy Harrison (1892–1931), English boxer of the 1900s-1920s
• Tommy Harrison (footballer) (born 1974), Scottish footballer for Heart of Midlothian
• Thomas Harrison (ship-owner) (1815–1888), Liverpool ship-owner

Spelling variants

• Tom Harrisson (1911–1976), British polymath

• Thomas Harrison (ship), used to transport free settlers and convicts from Ireland and England to Australia and New Zealand from 1835 to 1842