The 2021–22 Northern Arizona Lumberjacks men's basketball team represented Northern Arizona University in the 2021–22 NCAA Division I men's basketball season.

The Lumberjacks were led by third-year head coach Shane Burcar, and played their home games at the Rolle Activity Center in Flagstaff, Arizona as members of the Big Sky Conference.

11 seed in the Big Sky tournament, they lost to Eastern Washington in the first round.

[2] In a season limited due to the ongoing COVID-19 pandemic, the Lumberjacks finished the 2020–21 season 6–16 overall, 4–10 in Big Sky play, to finish in a tie for tenth place.

[3] In the Big Sky Conference tournament, they defeated Portland State in the first round[4] before losing to Eastern Washington.