Helfrich is both a surname and a given name. Notable people with the name include:
Surname: The Helfrich family of South African cricketers: Dudley Helfrich (1912–1980) Basil Helfrich (1919–1938) Cyril Helfrich (1924–2002) Kenneth Helfrich (1927–1982) Anke Helfrich (born 1966), German jazz pianist and composer Conrad Emil Lambert Helfrich (1886–1962), Dutch admiral Jeff Helfrich (born 1967/68), American politician John Helfrich (1795–1852), American pastor and homeopath Karl Helfrich, American physical oceanographer Mark Helfrich (disambiguation), multiple people Theo Helfrich (1913–1978), German racing driver Ty Helfrich (1890–1955), American baseball player Wolfgang Helfrich (1932–2025), German physicist
Given name: Helfrich Bernhard Wenck (1739–1803), German historian and educator Johann Helfrich von Müller (1746–1830), German engineer