The 2021–22 Green Bay Phoenix men's basketball team represented the University of Wisconsin–Green Bay in the 2021–22 NCAA Division I men's basketball season.

The Phoenix, led by second-year head coach Will Ryan, split their home games between the Resch Center in Ashwaubenon, Wisconsin and the Kress Events Center in Green Bay, Wisconsin.

They lost in the first round of the Horizon League Tournament to Detroit Mercy.

In a season limited due to the ongoing COVID-19 pandemic, the Phoenix finished the 2020–21 season 8–17, 8–12 in Horizon League play to finish in ninth place.

7 seed in the Horizon League tournament, they lost to Purdue Fort Wayne in the first round.