Alphonse Berns (born April 9, 1952) is a senior Luxembourgish diplomat in the rank of Ambassador extraordinary and plenipotentiary.
He has served as his country's Ambassador in Washington, DC, London, Brussels, to NATO as well as to the UN and WTO in Geneva.
Upon return to Luxembourg, he was mandated to develop and run a new Budget and Administration Department at the Ministry of Foreign Affairs.
In 1991, Berns was promoted to the post of Ambassador to the United States of America, also accredited to Canada and Mexico.
The project was majority funded by Swiss businessman and art dealer Yves Bouvier of Natural Le Coultre SA.