Frederick or Fred Petersen may refer to:
Frederick Petersen (1874–1946), American physiotherapist and politician Fred Petersen (rugby league) (born 1978), Samoan rugby player Fred A. Petersen (1808–1885), American architect Fred C. Petersen (1908–1989), American politician from Florida Fredrik Petersen (born 1983), Swedish handball coach and player
See also Frederick Peterson (disambiguation)