Julien Vauclair (born October 2, 1979) is a Swiss former professional ice hockey defenseman who spent most of his career with HC Lugano in the National League (NL).

He made his professional debut in 1996 with HC Ajoie in Switzerland's second tier, Swiss League (SL).

As a youth, Vauclair played in the 1992 and 1993 Quebec International Pee-Wee Hockey Tournaments with a team from Switzerland.

Vauclair has also played in the American Hockey League with the Grand Rapids Griffins and the Binghamton Senators.

On June 2, 2019, Vauclair agreed to a one-year contract extension with HC Lugano, stating that this would be his final season of professional hockey.