This article lists notable people with the given name Thomas.
- Thomas (bishop of the East Angles) (fl. ca. 647–648), Christian bishop of Dunwich
- Sir Thomas à Beckett (judge) (1836–1919), Australian solicitor and judge
- Thomas Andrew (photographer) (1855–1939), New Zealand photographer who lived in Samoa from 1891
- Thomas of Ashborne, English controversialist
- Thomas Austin (pastoralist) (1815–1871), English settler in Australia who introduced rabbits into Australia in 1859
- Thomas Bangalter (born 1975), French DJ and member of Daft Punk
- Thomas Baker (artist) (1809–1864), English landscape painter and watercolourist
- Thomas Boylston Adams (1772–1832), Massachusetts legislator and judge and brother of John Quincy Adams
- Thomas Boylston Adams (1910–1997), Massachusetts executive, writer, and political candidate
- Thomas Amarasuriya (1907–1979), Sri Lankan planter and politician
- Thomas Aquinas (1225–1274), Italian philosopher and theologian
- Thomas Audley, 1st Baron Audley of Walden (c.1488 – 1544), English barrister and judge, Lord Chancellor
- Thomas Bardwell (1704–1767), English portrait and figure painter, art copyist, and writer
- Saint Thomas Becket, Archbishop of Canterbury from 1162 until his murder in 1170
- Thomas Binger, American lawyer
- Thomas Boylston (1644–1695), early-American doctor and patriarch of the influential Boylston family of Massachusetts
- Thomas Blake Glover, Scottish merchant in Japan in the Bakumatsu and Meiji eras
- Thomas Bourchier (cardinal) (c.1411 – 1486), English cardinal and Lord Chancellor
- Thomas Brodie-Sangster (born 1990), English actor
- Thomas Brugis, English surgeon
- Thomas Bunday (1948–1983), American serial killer
- Tom Calma (born 1953), Australian First Nations human rights and social justice campaigner
- Thomas de Cantilupe (c. 1218–1282), Lord Chancellor of England and Bishop of Hereford
- Thomas Cardozo (1838–1881), American educator, politician, and journalist
- Thomas Carlyle (1795–1881), Scottish essayist, historian, and philosopher
- Thomas Child (1841–1898), English photographer and engineer
- Thomas J. Clayton (1826–1900), American lawyer and judge
- Thomas Sean Connery (1930–2020), Scottish actor
- Thomas Joshua Cooper (born 1946), American photographer
- Thomas Cornell (artist) (1937–2012), American artist
- Thomas Crotty (1912–1942), American Coast Guardsman held as POW during World War II
- Thomas Cromwell (1485–1540), English lawyer and statesman who served as chief minister to King Henry VIII
- Thomas "Tom" Cruise (born 1962), American actor and producer
- Thomas Cooray (1901–1988), first Sri Lankan cardinal, Archbishop of Colombo, 1947–1976
- Thomas Dafydd, Welsh elegist and hymn writer
- Thomas D'Alesandro Jr. (1903–1987), American politician
- Thomas D'Alesandro III (1929–2019), American attorney and politician
- Thomas Dang (born 1995), Canadian politician
- Chris Thomas Devlin, American screenwriter
- Thomas Roderick Dew (1802–1846), American professor and president of The College of William & Mary, influential pro-slavery advocate
- Thomas Dörflein (1963–2008), German zookeeper
- Thomas Doughty (artist) (1793–1856), American artist associated with the Hudson River School
- Sir Thomas Dyke Acland, 12th Baronet (1842–1919), British politician
- Thomas Edison (1847–1931), American inventor and businessman
- Thomas Edwards (artist) (1795–1869), American artist in 19th-century Boston, Massachusetts, specializing in portraits
- Thomas Andrew Felton (born 1987), British actor known for his role in the Harry Potter films as Draco Malfoy
- Thomas Leigh Gatch (1891–1954), American naval officer and attorney
- Thomas Milton Gatch (1833–1913), American educator and politician
- Thomas S. Gathright (1829–1880), American educator and masonic leader
- Thomas Gibson (artist) (c.1680–1751), English portrait painter and copyist
- Thomas Godfrey (disambiguation), multiple people
- Thomas Gooch (artist) (1750–1802), English artist who specialised in painting animals
- Thomas Gottschalk (born 1950), German TV host and actor
- Thomas Gottstein (born 1964), Swiss banker, CEO of Credit Suisse
- Thomas Graves (Royal Navy officer) (c.1747 – 1814), British naval officer
- Thomas Green (disambiguation), multiple people
- Thomas "Tom" Hanks (born 1956), American actor
- Thomas Hearne (artist) (1744–1817), English landscape painter, engraver and illustrator
- Thomas "Tom" Hiddleston (born 1981), English actor
- Thomas Lawrence Higgins (1950–1994), American writer and gay rights activist
- Thomas Higham (artist) (1795–1844), English artist specialising in an antiquary and topographical engravings
- Thomas Heffernan Ho (born 1989), Hong Kong equestrian
- Thomas Ho (disambiguation), multiple people
- Thomas Hobbes (1588–1679), English philosopher
- Thomas Hogan (artist) (1955–2014), Canadian First Nations artist
- Thomas Horton (soldier) (1603–1649), English general and judge
- Thomas Howard, 1st Earl of Suffolk (1561–1626)
- Thomas Howard, 4th Duke of Norfolk (died 1572)
- Thomas "Tom" Holland (born 1996), English actor
- Thomas Jefferson (1743–1826), third President of the United States
- Thomas Jones (disambiguation), multiple people, including:
- Thomas "Tom" Jones (born 1940), Welsh singer
- Thomas V. Julien (1838–1906), justice of the Supreme Court of Nevada
- Thomas Keneally (born 1935), Australian novelist, playwright, essayist, and actor
- Thomas Kittera (1789–1839), American politician
- Thomas Lærke (born 1991), Danish basketballer
- Thomas Lavigne, American politician
- Thomas Law (disambiguation), multiple people
- Thomas Leiper (1745–1825), Scottish-American businessman, banker and politician
- Thomas Lembong (born 1971), Indonesian politician
- Thomas Limpinsel (born 1965), German actor
- Thomas Lincoln (1778–1851), father of Abraham Lincoln
- Thomas Lincoln Jr., brother of Abraham Lincoln
- Thomas "Tad" Lincoln III (1853–1871), fourth son of Abraham Lincoln, whose nickname is Tad
- Thomas Lodu, South Sudanese politician
- Thomas R. Marshall (1854–1925), American politician who served as the 28th vice president of the United States from 1913 to 1921
- Thomas Massie (born 1971), United States Congressman from Kentucky
- Thomas J. Mastin (1839–1861), Confederate captain and lawyer
- Thomas Mathews (1676–1751), British officer of the Royal Navy, who rose to the rank of admiral
- Thomas N. McClellan (1853–1906), associate justice and chief justice of the Supreme Court of Alabama
- Thomas "Tom" McClintock (born 1956), American politician and U.S. Representative for California's 4th congressional district
- Thomas W. Merrill (born 1949), American legal scholar
- Thomas F. Metz (born 1948), lieutenant general in the United States Army
- Thomas More (1478–1535), English lawyer, social philosopher, author, statesman, and Renaissance humanist
- Thomas Müller (born 1989), German footballer
- Thomas Muster (born 1967), Austrian tennis player
- Thomas Newson (born 1994), Dutch DJ and electronic music producer
- Thomas Nihlén (born 1953), Swedish politician
- Thomas Nordahl (born 1946), Swedish soccer player
- Thomas Noret (born 1946), American politician
- Thomas Burton O'Connor (1914–1952), American journalist & editor
- Thomas O'Regan (1956–2020), Australian academic
- Thomas Orbos, Filipino businessman, government administrator, and politician
- Thomas Owen (Launceston MP) (1840–1898), British politician
- Thomas Paine (1737–1809), American philosopher and political activist
- Thomas Palaiologos (1409–1465), Despot of the Morea and brother of Constantine XI, the last Byzantine emperor
- Tom Pashby (1915–2005), Canadian ophthalmologist and sport safety advocate
- Thomas Paxton (1820–1887), Canadian industrial businessman and politician
- Thomas Pelham-Holles, 1st Duke of Newcastle (1693–1768), Prime Minister of Great Britain
- Thomas Pestock (born 1984), American professional wrestler known by his ring name Baron Corbin
- Thomas "Tom" Petty (1950–2017), American singer-songwriter and musician
- Thomas Quasthoff (born 1959), German opera singer
- Thomas De Quincey (1785–1859), English essayist
- Thomas Randolph (ambassador) (1523–1590), English diplomat and politician
- Thomas Randolph of Tuckahoe (1683–1729), Virginia politician
- Thomas Randolph (academic) (1701–1783), Vice-Chancellor of Oxford University
- Thomas Randolph, 1st Earl of Moray (died 1332), nephew and companion-in-arms of King Robert the Bruce
- Thomas Randolph, 2nd Earl of Moray (died 1332), son of the 1st Earl of Moray
- Thomas Beverly Randolph (1793–1867), American military officer
- Thomas Jefferson Randolph (1792–1875), grandson of Thomas Jefferson
- Thomas Mann Randolph Sr. (1741–1793), father of Thomas Mann Randolph Jr.
- Thomas Mann Randolph Jr. (1768–1828), son-in law of Thomas Jefferson
- Thomas Rankine (born 1978), American musician
- Thomas Buchanan Read (1822–1872), American poet and painter
- Thomas Reynolds (Australian politician) (1818–1875), fifth Premier of South Australia
- Thomas Roma (formerly Thomas Germano; born 1950), American photographer
- Thomas Ruff (born 1958), German photographer
- Thomas Ryan (artist) (1929–2021), Irish artist, designer and medallist
- Thomas Saikhom (born 1982), Indian footballer
- Thomas de Sampayo (1855–1927), Sri Lankan judge
- Thomas Savundaranayagam (born 1938), Sri Lankan Tamil Roman Catholic priest, Bishop of Jaffna from 1992–2015
- Thomas Scott (entertainer), British educational YouTuber, game show host, and web developer
- Thomas "TomSka" Ridgewell (born 1990), British YouTuber
- Thomas Sharkey (1871–1953), American boxer
- Thomas Sheraton (1751–1806), English furniture designer
- Harry Thomas Silcock (1882–1969), English Quaker missionary
- Thomas Simons (born 2004), British YouTuber and Twitch streamer known online as TommyInnit
- Thomas "Tom" Sizemore Jr. (1961–2023), American actor
- Thomas Smythe (artist) (1825–1906), English artist who painted landscapes, bucolic scenes and animals
- Thomas Stavngaard (born 1974), Danish badminton player
- Thomas Steinbeck (1944–2016), American screenwriter, photographer, and journalist
- Thomas Strand (born 1954), Swedish politician
- Thomas Sutcliffe (artist) (1828–1871), English watercolour painter
- Thomas Sutton (1819–1875), English photographer, author, and inventor
- Thomas Tesche (born 1978), German badminton player
- Thomas Trauttmann (born 1991), French basketball player
- Thomas Tuchel (born 1973), German football coach
- Thomas Vicary (c. 1490–1561), English physician, surgeon, and anatomist
- Thomas Wedgwood (1771–1805), English photographer and inventor
- Thomas Wolsey (1473–1530), English archbishop, statesman and a cardinal of the Catholic Church
- Thomas Joseph Wynne (1838–1893), American–Irish photographer and shopkeeper
- Thomas Yassmin, Australian-American football player
- Thomas Edward Yorke (born 1968), English musician and the main vocalist and songwriter of the rock band Radiohead
- Thomas Young (disambiguation), multiple people