The 2018–19 NHL season was the 102nd season of operation of the National Hockey League. 31 teams competed in an 82-game regular season. The regular season began on October 3, 2018, and ended on April 6, 2019. The 2019 Stanley Cup playoffs began on April 10, 2019, and the Stanley Cup Finals concluded on June 12, 2019, with the St. Louis Blues winning their first Stanley Cup in the Finals over the Boston Bruins in seven games.

The 2019 Stanley Cup Finals was the championship series of the National Hockey League's (NHL) 2018–19 season and the culmination of the 2019 Stanley Cup playoffs. The Western Conference champion St. Louis Blues defeated the Eastern Conference champion Boston Bruins four games to three in the best-of-seven series. It was the Blues' first championship, in their 51st season of play, ending what was then the third-longest championship drought in league history. The Bruins had home-ice advantage in the series with the better regular season record. The series began on May 27 and concluded on June 12. The Blues' Stanley Cup–winning run of 26 playoff games tied the 2014 Los Angeles Kings for the longest of any Stanley Cup–winning team in history.