Werner Hug (born 10 September 1952 in Feldmeilen) is a Swiss chess player. Hug was World Junior Chess Champion in 1971 and was Switzerland's leading player of the 1970s.
In 1968 he won the Swiss Junior Championship. In a game in a preliminary section of the 1969 World Junior Championship, he overlooked a mate threat against Anatoly Karpov, which would have forced Karpov to lose a decisive amount of material in order to parry it; instead, the game eventually ended in a draw. Had Karpov lost this game he would not have qualified for the final A section. Karpov went on to win the Junior championship, and would become the World Champion in 1975.
He was awarded the title of International Master (IM) in 1971, when he became World Junior Champion in Athens. He won the Swiss Championship in 1975.
Hug has played on the Swiss team in the Chess Olympiads eleven times, playing first board in 1972, 1974, 1976, 1980, and 1984. He also played first board in the World Student Olympiad in 1972 and 1976.