Cust (surname)

Cust is an English surname. It may refer to:
 * Cust baronets, a Baronetage of England and a Baronetage of the United Kingdom
 * Albinia Wherry Cust (1857-1929), writer, daughter of Robert Needham
 * Aleen Cust (1868–1937), Irish veterinary surgeon
 * Archer Cust (1896–1962), British civil servant and art historian
 * Brownlow Cust, 1st Baron Brownlow (1744–1808), English Member of Parliament
 * Charles Cust (1813–1875), British soldier and Conservative politician
 * Edward Cust (1794–1878), British soldier, politician and courtier
 * Edwards Cust (1804–1895), Archdeacon of Richmond from 1868 until 1894
 * Harry Cust (1861–1917), English journalist, poet, and Member of Parliament
 * Henry Cockayne Cust (1780–1861), Canon of Windsor from 1813 to 1861
 * Jack Cust (born 1979), American baseball outfielder
 * John Cust (footballer) (1874–1954), Scottish footballer
 * Lionel Cust (1859–1929), English art historian and museum director
 * Maria Cust (1862 or 1863 - 1958), English geographer, daughter of Robert Needham
 * Peregrine Cust (disambiguation), multiple people
 * Richard Cust (disambiguation), multiple people
 * Robert Needham Cust (1821–1909), British colonial administrator and linguist, father of Albinia and Maria
 * Sir John Cust, 3rd Baronet (1718–1770), British politician
 * William Cust (1787–1845), British barrister and Member of Parliament