Thomas Williams may refer to:
Academics
- Thomas Williams, Gresham Professor of Astronomy
- Thomas Desmond Williams (1921âÂÂ1987), Irish academic and Professor of Modern History at University College Dublin
- Thomas R. Williams (1939âÂÂ2025), Canadian educator, 19th principal of Queen's University
- T. Harry Williams (1909âÂÂ1979), historian at Louisiana State University
- Thomas Williams, Assistant Dean, Sandra Day O'Connor College of Law
- T. C. Williams, American educator for whom T. C. Williams High School, Alexandria, Virginia, is named
- Thomas W. Williams (engineer), American educator and 1989 IEEE fellow
- Thomas Williams (philosopher), American philosopher
Arts
Military
Religion
- Thomas Williams (priest and translator) (1658âÂÂ1726), Welsh Anglican priest
- Thomas Williams (vicar apostolic of the Northern District) (1661âÂÂ1740), Roman Catholic bishop
- Thomas Williams (Congregational minister) (1725âÂÂ1770), Congregational minister
- Thomas Williams (1755âÂÂ1839), author of the Cottage Bible
- Thomas Williams (1779âÂÂ1876), Congregational minister
- Thomas Williams (Christadelphian) (1847âÂÂ1913)
- Thomas Rhondda Williams (1860âÂÂ1945), Welsh Congregational minister
- Thomas Charles Williams (1868âÂÂ1927), Welsh Calvinistic Methodist minister
- Thomas Williams (dean of Bangor) (1870âÂÂ1941), Welsh Anglican priest
- Thomas Leighton Williams (1877âÂÂ1946), British Roman Catholic archbishop
- Thomas Williams (archdeacon of Craven) (1889âÂÂ1956), Anglican priest
- Thomas Williams (cardinal) (1930âÂÂ2023), Roman Catholic bishop
- Thomas Williams (dean of Llandaff) (died 1877), Welsh Anglican priest
Politicians
Australia
United Kingdom
- Thomas Williams (by 1518-79/90), MP for Oxford
- Thomas Williams (speaker) (1513/4âÂÂ1566), Speaker of the House of Commons
- Thomas Williams (Warrington MP) (1915âÂÂ1986), British Labour Co-operative politician
- Thomas Williams of Llanidan (1737âÂÂ1802), Welsh lawyer and businessman known as the âÂÂCopper King of Parys MountainâÂÂ, MP for Marlow 1790âÂÂ1802
- Thomas Williams, 1st Baron Williams (1892âÂÂ1966), British life peer and Labour Party member
- Jeremiah Williams (British politician) (Thomas Jeremiah Williams, 1872âÂÂ1919), Welsh barrister and Liberal politician
- Thomas Peers Williams (1795âÂÂ1875), MP for Marlow 1820âÂÂ1868, Father of the House, 1867âÂÂ1868; grandson of Thomas Williams of Llanidan
- T. Russell Williams (1869âÂÂ1926), socialist activist
- Thomas Williams (Kennington MP) (1877âÂÂ1927), British Member of Parliament for Kennington, 1923âÂÂ1924
- Sir Thomas Williams, 1st Baronet (c. 1621âÂÂ1712), English medical doctor and Member of Parliament for Weobley
- Thomas Williams of Edwinsford (died 1762), Custos Rotulorum of Carmarthenshire from 1745 to 1762
United States
- Thomas Williams (Alabama politician) (1825âÂÂ1903), US representative
- Thomas Williams (Pennsylvania politician) (1806âÂÂ1872), US representative
- Thomas Edward Williams (politician) (1849âÂÂ1931), American politician in Wisconsin and Nebraska
- Thomas Hickman Williams (1801âÂÂ1851), US senator from Mississippi, 1837âÂÂ1838
- Thomas Hill Williams (1780âÂÂ1840), US senator from Mississippi, 1817âÂÂ1828
- Thomas Marvin Williams (1890âÂÂ1967), member of the Mississippi State Senate
- Thomas Scott Williams (1777âÂÂ1861), US representative from Connecticut
- Thomas Sutler Williams (1872âÂÂ1940), US representative from Illinois
- Thomas Wheeler Williams (1789âÂÂ1874), US representative from Connecticut
- Thomas W. Williams (politician) (c. 1867âÂÂ1931), church minister and member of the Los Angeles, California, City Council
Sport
Others
- Thomas H. Williams (California official) (1828âÂÂ1886), attorney general of California, 1858âÂÂ1862
- Thomas Lyle Williams (1896âÂÂ1976), American businessman
- Thomas Williams (manufacturer) (1846âÂÂ?), New Zealand ironfounder and businessman
- Thomas Williams (Mayflower), signatory of the Mayflower Compact
- Thomas Williams (pioneer) (died 1785), early settler to Detroit, Michigan and grandfather of general Thomas Williams
- Thomas Williams (died 1831), murderer, one of the London Burkers
- Thomas Walter Williams (1763âÂÂ1833), English barrister, known as a legal writer
- Thomas Williams (Northern Rhodesian speaker) (1893âÂÂ1967), Speaker of the Legislative Council of Northern Rhodesia
- Thomas Coldham Williams (1825âÂÂ1912), New Zealand land owner
- Thomas Williams (Tehoragwanegen) (c.1758âÂÂ1848), Iroquois chief of the Kahnawake peoples
- T. Marchant Williams, Welsh nationalist, lawyer, and author
See also