The 2021–22 PHF season was the seventh season of the Premier Hockey Federation (PHF), which was known as the National Women's Hockey League during the previous six seasons, in North America. After mostly playing in a bubble environment the previous season due to the on-going COVID-19 pandemic, the PHF commenced the 2021–22 season with a normal travel-based schedule.

The Premier Hockey Federation (PHF) was a women's professional ice hockey league in the United States and Canada that operated from March 2015 until June 2023. The league was established in 2015 as the National Women's Hockey League (NWHL), comprising four league-owned teams. Over time, some teams gained independent ownership and the number of teams grew to seven; teams during the league's final season in 2022–23 included the Boston Pride, Buffalo Beauts, Connecticut Whale, Metropolitan Riveters, Minnesota Whitecaps, Montreal Force, and Toronto Six. The Isobel Cup was awarded annually to the league playoff champion.