Frenk is a surname. Notable people with the surname include:
Carlos Frenk (born 1951), Mexican-British cosmologist Navarro-Frenk-White profile, spatial distribution of dark matter predicted from N-body simulations Julio Frenk (born 1953), Mexican academic administrator, physician and sociologist Margit Frenk (1925–2025), German-Mexican philologist, folklorist and translator Mariana Frenk-Westheim (1898–2004), German-Mexican writer of prose, Hispanist, lecturer in literature, museum curator, and translator Given name Frenk Keukens (born 1995), Dutch footballer
See also Frenk DJ (born 1983), Italian disc jockey Frenk Ibrahim Pasha (1495–1536), Ottoman grand vizier