Thomas Ewing (1789–1871) was a U.S. politician.
Thomas Ewing may also refer to: Thomas Ewing (American Revolution) (1730–1790), battalion commander in the Maryland Flying Camp during the American Revolutionary War Thomas Ewing Jr. (1829–1896), his son, U.S. politician Thomas Ewing (Australian politician) (1856–1920) Thomas W. Ewing (born 1935), U.S. politician Thomas Ewing III (1862–1942), Commissioner of the U.S. Patent Office Tommy Ewing (born 1937), Scottish footballer
See also Thomas Ewing Sherman (1856–1933), American lawyer, educator, and Catholic priest