The 1977 Calder Cup Playoffs of the American Hockey League began on April 3, 1977. The top four teams in the league qualified for the playoffs and played best-of-7 series for Semifinals. The two winners played a best-of-7 series for the Calder Cup. The Calder Cup Final ended on April 30, 1977 with the Nova Scotia Voyageurs defeating the Rochester Americans four games to two to win the Calder Cup for second consecutive year, and the third time in team history.
In each round, the team that earned more points during the regular season receives home ice advantage, meaning they receive the "extra" game on home-ice if the series reaches the maximum number of games. There is no set series format due to arena scheduling conflicts and travel considerations.