| Sport: | basketball |
| Year: | 2019–20 |
| Prev Year: | 2018–19 |
| Next Year: | 2020–21 |
| Team: | Oregon State Beavers |
| Conference: | Pac-12 Conference |
| Short Conf: | Pac-12 |
| Record: | 18–13 |
| Conf Record: | 7–11 |
| Head Coach: | Wayne Tinkle |
| Hc Year: | 6th |
| Assoc Coach: | Kerry Rupp |
| Ahc Year: | 6th |
| Asst Coach1: | Stephen Thompson |
| Ac1 Year: | 6th |
| Asst Coach2: | Marlon Stewart |
| Ac2 Year: | 1st |
| Arena: | Gill Coliseum |
The 2019–20 Oregon State Beavers men's basketball team represented Oregon State University in the 2019–20 NCAA Division I men's basketball season. The Beavers were led by sixth-year head coach Wayne Tinkle, and played their home games at Gill Coliseum in Corvallis, Oregon as members of the Pac-12 Conference. They finished the season 18–13, 7–11 in Pac-12 play to finish in a three-way tie for eighth place. They defeated Utah in the first round of the Pac-12 tournament and were set to take on rival Oregon in the quarterfinals before the remainder of the Pac-12 Tournament was cancelled amid the COVID-19 pandemic.
The 2017–18 Beavers finished the 2018–19 season 18–13, 10–8 in Pac-12 play to finish in a three-way tie for fourth place. They lost in the quarterfinals of the Pac-12 tournament to Colorado. Despite having 18 wins and a better record they failed to get an invitation to the National Invitation Tournament and also ruled out of the College Basketball Invitational.[1]
| Name | Num | Pos. ! | Height | Weight | Year | Hometown | Reason for departure | |
|---|---|---|---|---|---|---|---|---|
| Jordan Campbell | 0 | G | 6'3" | 195 | Freshman | Mid season transferred to Fresno State | ||
| 1 | G | 6'4" | 190 | Senior | Graduated | |||
| Kye Blaser | 2 | G | 6'3" | 180 | Freshman | Transferred to Linn–Benton CC | ||
| Jack Wilson | 14 | C | 7'0" | 255 | Freshman | Mid season transferred to Idaho | ||
| Warren Washington | 22 | F | 6'11" | 210 | Freshman | Transferred to Nevada | ||
| Gligorije Rakocevic | 23 | C | 6'11" | 255 | Senior | Graduated |
| Name | Num | Pos. ! | Height | Weight | Year | Hometown | Previous School | |
|---|---|---|---|---|---|---|---|---|
| Sean Miller-Moore | 1 | G | 6'5" | Junior | Junior college transferred from Moberly Area CC | |||
| Roman Silva | 12 | C | 7'1" | 265 | RS Junior | Junior college transferred from San Bernardino Valley College | ||
| Joey Potts | 23 | C | 6'10" | 200 | Junior | Junior college transferred from College of Marin. Will join the team as a walk-on. |
[2] |-!colspan=12 style=| Exhibition|-!colspan=12 style=| Non-conference regular season|-!colspan=12 style=| Pac-12 regular season|-!colspan=12 style=| Pac-12 tournament|- style="background:#bbbbbb"| style="text-align:center"|March 12, 2020
12:00 pm, P12N| style="text-align:center"| (8)| vs. (1) No. 13 Oregon
Quarterfinals/Civil War| colspan=5 rowspan=1 style="text-align:center"|Cancelled due to the COVID-19 pandemic[3] | style="text-align:center"|T-Mobile Arena
Paradise, NV|-