The 1990–91 Pittsburgh Penguins season was the Penguins 24th season in the NHL, and they were coming off of a disappointing 1989–90 season, when they finished with a 32–40–8 record, recording 72 points, finishing 1 point behind the New York Islanders for the final playoff spot in the Patrick Division, failing to qualify for post season play for the 7th time in 8 seasons. The Penguins placed first in their division, third-overall in the Wales Conference, on the way to the first-ever Stanley Cup championship for the team.
The 1991 Stanley Cup Final NHL championship series was contested by the Pittsburgh Penguins and the Minnesota North Stars. It was the Penguins' first Final series appearance and their first Stanley Cup victory. This is the first and only (through 2014) Stanley Cup Final to feature two teams from the expansion group of 1967. It was Minnesota's second Final series appearance, and their last before the franchise's relocation to Dallas two years later. It was also the first time since 1983 that an American franchise would win the Stanley Cup. This was the first all-American finals since 1981, which also featured the North Stars in their first appearance. This was also the first final since 1982 not to feature either the Calgary Flames or the Edmonton Oilers, and the first since 1981 not contested by a team from Western Canada. The Finals, and the NHL season, ended on May 25, marking the last time to date that the Stanley Cup playoffs have not extended into the month of June.