2021 Premier Lacrosse League season

The 2021 Premier Lacrosse League season was the third season of the Premier Lacrosse League (PLL). The 2021 season represented a return to the tour-based format that the league followed in 2019 after playing a bubble tournament in 2020 due to the COVID-19 Pandemic. 2021 also represented a return to one unified professional Field Lacrosse format after Major League Lacrosse and the Premier Lacrosse League announced they were merging on December 16, 2020. This monumental merger saw the PLL adopt the naming rights to all former MLL teams, as well as Cannons Lacrosse Club moving from the MLL to the PLL as an 8th team set by expansion draft. The Whipsnakes Lacrosse Club were the two-time defending league champions. Chaos Lacrosse Club took revenge against Whipsnakes Lacrosse Club by defeating them in the championship game on September 19 at Audi Field by a score of 9–14.