Hagger as a surname may refer to:
Jean Hagger (1917–2008), Australian librarian Kim Hagger (born 1961), British athlete Lloyd Hagger (1898–1968), Australian rules footballer Nicholas Hagger (born 1939), British poet and author Peter Hagger (1944–1995), British trade unionist Rubeus Hagrid, a character in the fictional Harry Potter universe, referred to this way by his half-brother Grawp
See also Hagar (disambiguation) Haggar (disambiguation) Hager