Fitzwater is a patronymic surname of English origin, being a variant of Fitz Walter, 'son of Walter'. Notable people with the surname include:
Jack Fitzwater (born 1997), English footballer Jessica Fitzwater, American politician Marlin Fitzwater (born 1942), press secretary for presidents Ronald Reagan and George H. W. Bush Paul Fitzwater (born 1959), Republican member of the Missouri House of Representatives Rodger Fitzwater (born 1962), Democrat member of the Missouri House of Representatives Sidney A. Fitzwater (born 1953), American jurist Travis Fitzwater (born 1981), Republican member of the Missouri House of Representatives Darryl Fitzwater, American Anglican bishop
See also Fitzwater Wray (1869–1938), British cycling journalist Fitzwater Station, a restaurant and former stop along the Underground Railroad Thomas Fitzwater Elementary School, located in the Upper Dublin School District of Pennsylvania