Ferlin is both a given name and a surname.
Notable people with the given name include: Ferlin Husky (1925–2011), American singer Ferlin C. A. Sangma, Indian politician
Notable people with the surname include: Brian Ferlin (born 1992), American ice hockey player Klemen Ferlin (born 1989), Slovenian handball player Nils Ferlin (1898–1961), Swedish poet and lyricist