Joseph Schaack (born March 26, 1945 in Luxembourg City) is a politician from Luxembourg. He is a leading member of the Confédération générale de la fonction publique, a civil service union. In 1999 he ran for election for the Democratic Party. From 1 November 2004 to 4 February 2008, he was the director of the customs administration.
- MEMORIAL: Journal Officiel du Grand-Duché de Luxembourg, B N° 4 17 January 2008, p 7 (in French)