The Clarence S Campbell Bowl, or the Campbell Trophy, is an ECHL trophy awarded to the Western Conference playoff champions. It is named after Clarence S Campbell, the president of the NHL from 1946 to 1977.

The Campbell Trophy was donated by the NHL's clubs in recognition of the contributions and services of its president at the start of the Modern Era expansion. It was designed to be a parallel to the Prince of Wales Trophy from its outset, being awarded to the first-place finisher in the Western Division during the regular season from its inception in the 1967-68 season through to the 1973-74. From the 1974-75 through to the 1980-81 season, it was given to the team with the best regular-season record in the Campbell Conference, and from the 1981-82 season through to the 1992-93 season, the Campbell Conference playoff champions. The Campbell Trophy has had its present role since the 1993-94 season, when the Campbell Conference became the Western Conference. The award was purchased by the ECHL prior to the 2004-2005 season.

The inaugural ECHL Clarence S Campbell Bowl winners were the Chicago Blackhawks.

ECHL4 Clarence S Campbell Bowl Winner
Vancouver Canucks

Previous Clarence S Campbell Bowl Winners
ECHL3 Chicago Blackhawks (Conrad Rosario)
ECHL2 Columbus Blue Jackets (Doug Moore)
ECHL1 Chicago Blackhawks (Conrad Rosario)