Downham may refer to:

Places in England Downham, Cambridgeshire, a civil parish Little Downham Downham, Essex Downham, Lancashire Downham, London, a district of south east London Downham Estate, housing estate in Downham, London Downham (ward), electoral ward Downham, a common name of Downham Market, Norfolk Downham West, Norfolk Downham, South Norfolk Downham, Northumberland

People with the surname George Downham (1560-1634), bishop of Derry Jenny Downham (born 1964), British novelist John Downham (1571-1652), English clergyman William Downham (1511–1577), bishop of Chester E. E. Downham (1839–1921), American politician

Other uses Downham (1795 cricketer), an English cricketer HMS Downham, a minesweeper

See also Donham, a surname