Biddulph is a surname. Notable people with the surname include:
Cyril Biddulph (1887–1918), Canadian actor Elizabeth Biddulph, Baroness Biddulph (1834–1916), English humanitarian, temperance leader; Woman of the Bedchamber to Queen Victoria Howard Biddulph (1935–2022), American political scientist John Biddulph (1840–1921), British soldier, author and naturalist John Burnet Biddulph (1796–1837), Cape Colony explorer and trader Ken Biddulph (1932–2003), English cricketer Lynne Biddulph (born 1968/1969), English cyclist Michael Biddulph, 1st Baron Biddulph (1834–1923), British banker and politician Michael Biddulph (British Army officer) (1823–1904), British Army officer and parliamentary official Sir Michael Biddulph, 2nd Baronet (c. 1652–1718), English politician Robert Biddulph (British Army officer) (1835–1918), British Army officer Robert Biddulph (MP) (1801–1864), British politician Sally Biddulph (born 1975), English television journalist Samuel Biddulph (1840–1876), English cricketer Steve Biddulph (born 1953), Australian author Sir Theophilus Biddulph, 1st Baronet (1612–1683), English politician