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 periodJohann Evangelist Haydn (1743–1805), tenor singer and brother of Joseph HaydnJoseph Timothy Haydn, Irish author of Haydn's Dictionary of Dates and The Book of DignitiesLili Haydn (born 1975), American actress, singer, and violinistMichael Haydn (1737–1806), composer and the younger brother of Joseph HaydnGiven name:
Haydn Bunton, Sr. (1911–1955), Australian rules footballerHaydn Bunton, Jr. (born 1937), Australian rules footballerHaydn Fleming (born 1978), English footballerHaydn Gwynne, British actressHaydn Linsley (born 1993), member of New Zealand boyband TitaniumHaydn Tanner (born 1917), former Welsh rugby union player who also played for the British and Irish LionsHaydn Wood (1882–1959), 20th-century English composer and a respected violinist