The 2015 Oregon State Beavers baseball team represented Oregon State University in the 2015 NCAA Division I baseball season. The Beavers played their home games at Goss Stadium at Coleman Field and were members of the Pac-12 Conference. The team was coached by Pat Casey in his 21st season at Oregon State.
Awards and honors
2015 was another award-winning year for Oregon State. It was the fourth straight year a Beaver player garnered a major conference award and third year in a row that at least four players were named to the All-Conference First Team.
Postseason
Although the Beavers finished second in the Pac-12 they were not selected as a Regional host site for the opening round of the 2015 NCAA Division I baseball tournament. Oregon State was the #2 seed of the Dallas Regional with host and #1 seed Dallas Baptist, #3 Texas and #4 Virginia Commonwealth. After winning their first game against Texas the Beavers were eliminated after dropping two straight versus VCU and Dallas Baptist.
Roster
Coaches
Schedule
! style="" | Regular season (38–16–1) |- valign="top"
|- bgcolor="#ddffdd" | 1 || Feb 13 || vs. || || Surprise Stadium • Surprise, AZ || W 2–1 || 1–0 || – |- bgcolor="#ddffdd" | 2 || Feb 14 || vs. || || Surprise Stadium • Surprise, AZ || W 4–3 (10) || 2–0 || – |- bgcolor="#ffdddd" | 3 || Feb 15 || vs. || || Surprise Stadium • Surprise, AZ || L 4–7 || 2–1 || – |- bgcolor="#ffdddd" | 4 || Feb 16 || vs. New Mexico || || Surprise Stadium • Surprise, AZ || L 2–5 || 2–2 || – |- bgcolor="#ddffdd" | 5 || Feb 19 || vs. No. 10 Oklahoma State || || Surprise Stadium • Surprise, AZ || W 5–3 || 3–2 || – |- bgcolor="#ddffdd" | 6 || Feb 20 || vs. Kansas State || || Surprise Stadium • Surprise, AZ || W 10–9 || 4–2 || – |- bgcolor="#ffdddd" | 7 || Feb 21 || vs. Oklahoma || || Surprise Stadium • Surprise, AZ || L 6–9 || 4–3 || – |- bgcolor="#ddffdd" | 8 || Feb 22 || vs. Kansas || || Surprise Stadium • Surprise, AZ || W 15–5 || 5–3 || – |- bgcolor="#ddffdd" | 9 || Feb 27 || || || Goss Stadium • Corvallis, OR || W 10–7 || 6–3 || – |- bgcolor="#ddffdd" | 10 || Feb 28 || Grambling State || || Goss Stadium at Coleman Field|Goss Stadium • Corvallis, OR || W 25–3 || 7–3 || – |- bgcolor="#ddffdd" | 11 || Feb 28 || Grambling State || || Goss Stadium at Coleman Field|Goss Stadium • Corvallis, OR || W 9–2 || 8–3 || – |-
|- bgcolor="#ddffdd" | 12 || Mar 4 || at || || Joe Etzel Field • Portland, OR || W 14–2 || 9–3 || – |- bgcolor="#ddffdd" | 13 || Mar 6 || || || Goss Stadium • Corvallis, OR || W 2–1 || 10–3 || – |- bgcolor="#ddffdd" | 14 || Mar 7 || Fresno State || || Goss Stadium • Corvallis, OR || W 5–2 || 11–3 || – |- bgcolor="#ddffdd" | 15 || Mar 7 || Fresno State || || Goss Stadium • Corvallis, OR || W 12–2 || 12–3 || – |- bgcolor="#ddffdd" | 16 || Mar 8 || Fresno State || || Goss Stadium • Corvallis, OR || W 2–1 || 13–3 || – |- bgcolor="#ddffdd" | 17 || Mar 10 || Portland || No. 24 || Goss Stadium • Corvallis, OR || W 12–3 || 14–3 || – |- bgcolor="#ddffdd" | 18 || Mar 13 || at No. 14 || No. 24 || Phoenix Municipal Stadium • Phoenix, AZ || W 1–0 || 15–3 || 1–0 |- bgcolor="#ffdddd" | 19 || Mar 14 || at No. 14 Arizona State || No. 24 || Phoenix Municipal Stadium • Phoenix, AZ || L 3–4 || 15–4 || 1–1 |- bgcolor="#ffdddd" | 20 || Mar 15 || at No. 14 Arizona State || No. 24 || Phoenix Municipal Stadium • Phoenix, AZ || L 4–7 || 15–5 || 1–2 |- bgcolor="#ddffdd" | 21 || Mar 20 || || No. 25 || Goss Stadium • Corvallis, OR || W 5–2 || 16–5 || 2–2 |- bgcolor="#ddffdd" | 22 || Mar 21 || Washington State || No. 25 || Goss Stadium • Corvallis, OR || W 3–0 || 17–5 || 3–2 |- bgcolor="#ddffdd" | 23 || Mar 22 || Washington State || No. 25 || Goss Stadium • Corvallis, OR || W 2–1 (11) || 18–5 || 4–2 |- bgcolor="#ddffdd" | 24 || Mar 24 || || No. 19 || Goss Stadium • Corvallis, OR || W 6–1 || 19–5 || – |- bgcolor="#ddffdd" | 25 || Mar 25 || San Jose State || No. 19 || Goss Stadium • Corvallis, OR || W 8–2 || 20–5 || – |- bgcolor="#ffdddd" | 26 || Mar 27 || || No. 19 || Goss Stadium • Corvallis, OR || L 1–8 || 20–6 || – |- bgcolor="#ffdddd" | 27 || Mar 28 || Cal Poly || No. 19 || Goss Stadium • Corvallis, OR || L 2–7 || 20–7 || – |- bgcolor="#ddffdd" | 28 || Mar 29 || Cal Poly || No. 19 || Goss Stadium • Corvallis, OR || W 4–2 || 21–7 || – |-