The 2021–22 Southern Utah Thunderbirds men's basketball team represented Southern Utah University in the 2021–22 NCAA Division I men's basketball season.

The Thunderbirds, led by sixth-year head coach Todd Simon, played their home games at the America First Event Center in Cedar City, Utah as members of the Big Sky Conference.

They lost in the quarterfinals of the Big Sky tournament to Portland State.

The season was the program's last as members of the Big Sky with the school announcing that the Thunderbirds will join the Western Athletic Conference in 2022.

They defeated Northern Colorado in the quarterfinals of the Big Sky tournament,[3] before being upset in overtime in the semifinals by Montana State.