David Wayne Callahan is an American artist living in Milan, Italy. He works as an actor and is a series regular on the show Il Collegio in the role of the English professor. He was the international voice of the Winter Olympics and Paralympics games 2026. He has appeared in many films television series in Italy and in international productions. He is also a theatre director and portrait painter. He paints his subjects from life using the same approach he uses as an actor: empathy, openness and interesting colors.