Thomas Davies may refer to:

• Thomas Davies (bishop) (c. 1511–1573), Welsh clergyman, Bishop of St Asaph, 1561–1573
• Thomas Davies (physician) (1792–1839), Welsh physician
• Thomas Davies (died 1615), an English physician and Lumleian lecturer
• Thomas Davies (bookseller) (c. 1713–1785), London-based Scottish bookseller
• Thomas Davies (?–1869), see Don Brewery
• Thomas Davies (British Army officer) (c. 1737–1812), Royal Artillery officer, artist, and naturalist
• Thomas Alfred Davies (1809–1899), American Civil War general
• Thomas Davies (Conservative politician) (1858–1939), British Member of Parliament for Cirencester and Tewkesbury, 1918–1929
• Thomas Davies (Australian politician) (1881–1942), Australian politician
• Thomas F. Davis (1804–1871), fifth Episcopal Bishop of South Carolina
• Thomas Frederick Davies Sr. (1831–1905), third bishop of the Episcopal Diocese of Michigan, 1889–1905
• Thomas Frederick Davies Jr. (1872–1936), second bishop of the Episcopal Diocese of Western Massachusetts, 1911–1936
• Thomas Henry Hastings Davies (1789–1846), British Member of Parliament for Worcester
• Thomas Stephens Davies (c. 1794–1851), British mathematician
• Thomas Nathaniel Davies (1922–1996), Welsh artist
• Tom Davies (born 1990/1991), a British YouTuber better known as GeoWizard
• T. Glynne Davies (1926–1988), Welsh poet, novelist and broadcaster

• Thomas Davies (footballer, born 1865) (1865–1902), Oswestry Town F.C. and Wales international footballer
• Thomas Davies (footballer, born 1872) (1872–1950s), Druids F.C. and Wales international footballer
• Tom Davies (American football) (1896–1972), American football player and coach
• Tom Davies (footballer, fl. 1894–1911), English footballer who played for Burslem Port Vale
• Tom Davies (footballer, born 1882) (1882–1967), English footballer who played for Swindon Town, Nottingham Forest, Reading and Southampton
• Tom Davies (footballer, born 1992), English professional footballer
• Tom Davies (footballer, born 1998), English professional footballer
• Tom Davies (rugby union, born 1986), Welsh rugby union player
• Tom Davies (rugby union, born 1993), Welsh rugby union player
• Tom Davies (rugby league) (born 1997), English rugby league footballer
• Tommy Davies (1920–1998), Welsh welterweight boxer
• Thomas Davies (footballer, born 2003), Welsh professional footballer
• Mervyn Davies (Thomas Mervyn Davies, 1946–2012), Welsh rugby union player

• Thomas Davis (disambiguation)
• Evan Thomas Davies (disambiguation)
• Thomas (disambiguation)
• Davies