Jean Hamilius (born 5 February 1927) is a former Luxembourgish politician and government minister from the Democratic Party. He was born in Luxembourg City. He served as Minister for Agriculture and Minister for Public Works (1974–79) as well as Associate Minister for Foreign Affairs (1976–1979) in Gaston Thorn's government (1974–79). He sat in the Chamber of Deputies between 1969 and 1984 (excepting the five years he spent as a minister), and in the communal council of Luxembourg City (1969–74). He was one of Luxembourg's six Members of the European Parliament from 1979 until 1981.