Jack A. Butterfield Trophy

The Calder Cup is the trophy awarded annually to the playoff champion of the American Hockey League (AHL). First awarded in the 1937–38 season, it is named after Frank Calder, first president of the National Hockey League. The Calder Cup is distinct from the Calder Memorial Trophy, which is awarded annually to the Rookie of the Year in the National Hockey League.

Teams from 28 different cities have won the Calder Cup. The Hershey Bears have won eleven championships, the most of any team currently in the AHL, and have competed in 23 finals, the most of any team in AHL history, compiling an 11-12 record in the finals. The original Cleveland Barons franchise, which competed in the league until 1973, won nine titles.

The Most Valuable Player of the playoffs is awarded the Jack A. Butterfield Trophy. It was first awarded in 1984 and is named after the former president of the AHL, Jack Butterfield. The trophy has been won by 34 different players, with none having won it more than once.

Note: All Jack A. Butterfield Trophy winners played for the winning team, unless otherwise noted.

^ A. Calder Cup won by second franchise known as the Pittsburgh Hornets. Previous franchise became the Rochester Americans.
^ B. Tim Tookey, Butterfield Trophy winner in 1985–86, played for the Hershey Bears, and is the only Butterfield Trophy winner to date to have played for a losing team in the Calder Cup finals.

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