Qualter is an Irish surname, meaning the son of Walter, a shortened form of McWalter/MacWalter. Notable people with the surname include:
Danny Qualter (born 1992), Irish rugby player David Qualter (born 2002), Irish hurler Declan Qualter, Irish hurler Noel Qualter (born 1977), English magician P. J. Qualter (1943–2019), Irish hurler Séamus Qualter, (born 1967), Irish hurler
See also Qualters