The 1951 Stanley Cup Final was contested by the Toronto Maple Leafs and the Montreal Canadiens. The Maple Leafs won the series 4–1, with all five games going into overtime. It was the Toronto franchise's ninth Stanley Cup win and the last in a series of six wins starting in 1942. It was the first appearance in a string of ten consecutive appearances by the Canadiens.

Toronto defeated the Boston Bruins 4–1 to reach the Finals. Montreal defeated the defending champion Detroit Red Wings 4–2 to reach the Finals.

For the first, and as of today, only time in NHL playoff history, every game went into overtime in this series. Bill Barilko scored the Cup-winning overtime goal, his last goal in the NHL as he would die in a plane crash during the summer.

The 1951 Stanley Cup was presented to Maple Leafs captain Ted Kennedy by NHL President Clarence Campbell following the Maple Leafs 3–2 overtime win over the Canadiens in game five.

The following Maple Leafs players and staff had their names engraved on the Stanley Cup

1950–51 Toronto Maple Leafs

§ also won the Stanley Cup in 1945.