Guillaume 'Willy' Bourg (22 February 1934 – 21 February 2003; French pronunciation: [ buʁ]) was a Luxembourgish politician. He was a member of the Christian Social People's Party (CSV), and sat in the Chamber of Deputies for eighteen years. Bourg died on 21 February 2003, the day before his sixty-ninth birthday. He was succeeded in the Chamber of Deputies by Marcel Sauber, then President of the Council of State.