There have been several well-known people named John Davies, including:
- John Davies (writing-master) (1565?–1618)
- Sir John Davies (poet) (1569–1626)
- Dr. John Davies (Mallwyd) (c.1567–1644), lexicographer, translator, and editor of the 1620 Welsh edition of the Bible
- John Davies (publisher) (1814-1872)
- Ernest Albert John Davies (politician) (1902–1991)
- John P. Davies (1908–1999), American diplomat
- John Davies (athlete) (1938–2003)
- Dr John Davies (historian) (and broadcaster)
- Dr John Davies (knowledge engineer), researcher on Semantic Web technology
- John Howard Davies, television producer
- John Quentin Davies, usually called Quentin Davies, British Conservative MP
- John Davies (swimmer)
- John Davies (sculptor) (b. 1946) British artist, working in sculpture and mixed media
- John Davies (businessman) (1916–1979) British businessman (British Petroleum) and cabinet minister
- Bishop John Stewart Davies of the Diocese of St Asaph, Church in Wales