Frej is a surname. Notable people with the surname include:
Issawi Frej (born 1963), Israeli Arab politician Ladislav Frej (born 1941), Czech actor Robin Frej (born 1998), Swedish footballer Saber Ben Frej (born 1979), Tunisian footballer
See also Fray (surname) Frei (surname) Frey (surname) Frej (disambiguation) Frej (given name)