| Year: | 2017–18 |
| Team: | Southern Utah Thunderbirds |
| Sport: | Basketball |
| Conference: | Big Sky Conference |
| Short Conf: | Big Sky |
| Record: | 13–19 |
| Conf Record: | 5–13 |
| Hc Year: | 2nd |
| Asst Coach1: | John Wardenburg |
| Asst Coach2: | Chris Pompey |
| Asst Coach3: | Trent Angelucci |
The 2017–18 Southern Utah Thunderbirds basketball team represented Southern Utah University during the 2017–18 NCAA Division I men's basketball season. The Thunderbirds were led by second-year head coach Todd Simon and played their home games at the America First Events Center in Cedar City, Utah as members of the Big Sky Conference. They finished the season 13–19, 5–13 in Big Sky play to finish in tenth place. In the Big Sky tournament they defeated Idaho State and Idaho to advance to the semifinals where they lost to Eastern Washington.
The Thunderbirds finished the 2016–17 season 6–27, 3–15 in Big Sky play to finish in a tie for 11th. As the No. 11 seed in the Big Sky tournament, they defeated Montana State in the first round before losing to Weber State in the quarterfinals.
| Name | Number | Pos. | Height | Weight | Year | Hometown | Reason for departure | |
|---|---|---|---|---|---|---|---|---|
| Randy Onwausor | 2 | G | 6'3" | 210 | RS Junior | Graduate transferred to LSU[1] | ||
| Decardo Day | 3 | G | 6'4" | 170 | Freshman | Transferred | ||
| Neema Namdar | 4 | G | 6'1" | 170 | Freshman | Transferred to Utah State University Eastern | ||
| John Marshall | 5 | G | 6'1" | 180 | Senior | Graduated | ||
| Will Joyce | 11 | F | 6'5" | 205 | Senior | Graduated | ||
| Race Parsons | 13 | G | 6'4" | 185 | Senior | Graduated | ||
| Adonis Saltes | 24 | G | 6'2" | 180 | Sophomore | Walk-on; left the team for personal reasons | ||
| Brayden Holker | 35 | F | 6'9" | 225 | RS Freshman | Walk-on; left the team for personal reasons |
| Name | Number | Pos. | Height | Weight | Year | Hometown | Previous School | |
|---|---|---|---|---|---|---|---|---|
| Jamil Jackson | 1 | G | 6'6" | 190 | Sophomore | |||
| Brandon Better | 2 | G | 6'2" | 180 | Junior | Junior college transferred from Moberly Area CC | ||
| Jamal Aytes | 15 | F | 6'6" | 235 | RS Senior | Transferred from Southern Utah. Will be eligible to play immediately since Aytes graduated from BYU. | ||
| Cameron Oluyitan | 23 | G | 6'6" | 183 | Junior | Transferred from Boise State. Under NCAA transfer rules, Oluyitan will have to sit out for the 2017–18 season. Will have two years of remaining eligibility. | ||
| Andre Adams | 32 | F | 6'9" | 225 | RS Sophomore | Transferred from Arizona State. Under NCAA transfer rules, Adams will have to sit out for the 2017–18 season. Will have three years of remaining eligibility. |
|-! colspan="9" style=| Exhibition|-! colspan="9" style=|Non-conference regular season|-! colspan="9" style=| Big Sky regular season|-! colspan="9" style=| Big Sky tournament