Thomas may refer to:

People
List of people with given name Thomas
Thomas (name)
Thomas (surname)
Saint Thomas (disambiguation)
Thomas Aquinas (1225–1274) Italian Dominican friar, philosopher, and Doctor of the Church
Thomas the Apostle
Thomas (bishop of the East Angles) (fl. 640s–650s), medieval Bishop of the East Angles
Thomas (Archdeacon of Barnstaple) (fl. 1203), Archdeacon of Barnstaple
Thomas, Count of Perche (1195–1217), Count of Perche
Thomas (bishop of Finland) (1248), first known Bishop of Finland
Thomas, Earl of Mar (1330–1377), 14th-century Earl, Aberdeen, Scotland

Geography
Places in the United States
Thomas, Illinois
Thomas, Indiana
Thomas, Oklahoma
Thomas, Oregon
Thomas, South Dakota
Thomas, Virginia
Thomas, Washington
Thomas, West Virginia
Thomas County (disambiguation)
Thomas Township (disambiguation)

Elsewhere
Thomas Glacier (Greenland)

Arts, entertainment, and media
Thomas (Burton novel) 1969 novel by Hester Burton, published in the US under the title Beyond the Weir Bridge,
Thomas (2001 film) or Gli amici di Gesù - Tommaso, a 2001 Italian film
Thomas (Jarvis novel), 1995 novel in the Deptford Histories Trilogy by Robin Jarvis
Thomas (opera), 1985 Finnish-language opera by Einojuhani Rautavaara
Thomas & Friends, British television series
Thomas & Friends: All Engines Go, animated television series that acts as a reboot to Thomas & Friends.
"Thomas," a song by A Perfect Circle from their 2000 album Mer de Noms

Companies and brands
Thomas', a brand of English muffins and bagels in North America
Thomas Built Buses, an American bus manufacturer
Thomas Cook Group, a former British, global travel giant
Thomas Motor Company, a former US manufacturer of motorcycles and automobiles
Thomas's of York, a pub in England
Thomas & Betts, a designer and manufacturer of connectors and components for electrical and communication markets
Thomas-Detroit (automobile), a former U.S. automobile manufacturer

Religion
Gospel of Thomas, a New Testament-era apocryphon
Infancy Gospel of Thomas, an infancy gospel
Book of Thomas the Contender, a gnostic book discovered in the Nag Hammadi library
Acts of Thomas, another gnostic text
Apocalypse of Thomas, a Christian gnostic apocalypse

Other uses
Thomas algorithm, a numerical algorithm to solve a tridiagonal system of equations
Thomas theorem, a theory of belief and their consequences
THOMAS, the U.S. Library of Congress's first online database

See also
Thomasine (disambiguation)
Thomasson (disambiguation)
Thomaston (disambiguation)
Thomasville (disambiguation)
Tom (disambiguation)
Tomas (disambiguation)
Tomás (disambiguation)
Tomašević, a surname
Tommie, a given name
Tommy (disambiguation)
Tuma (disambiguation)