Haydn is both a surname and a given name. Notable people with the name include:
Surname:
Joseph Haydn (1732–1809), Austrian composer of the Classical period
Johann Evangelist Haydn (1743–1805), tenor singer and brother of Joseph Haydn
Joseph Timothy Haydn, Irish author of Haydn's Dictionary of Dates and The Book of Dignities
Lili Haydn (born 1975), American actress, singer, and violinist
Michael Haydn (1737–1806), composer and the younger brother of Joseph Haydn
Given name:
Haydn Bunton, Sr. (1911–1955), Australian rules footballer
Haydn Bunton, Jr. (born 1937), Australian rules footballer
Haydn Fleming (born 1978), English footballer
Haydn Gwynne, British actress
Haydn Linsley (born 1993), member of New Zealand boyband Titanium
Haydn Tanner (born 1917), former Welsh rugby union player who also played for the British and Irish Lions
Haydn Wood (1882–1959), 20th-century English composer and a respected violinist
