2018 Oregon State Beavers baseball team

The 2018 Oregon State Beavers baseball team represented Oregon State University in the 2018 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 24th and final season at Oregon State. The Beavers began the season ranked #2 by Baseball America and were unanimously selected by Pac-12 coaches to repeat as conference champions.

They won their third national championship by defeating Arkansas in the 2018 College World Series. It was only the second time in College World Series history that a team won the championship after losing their first game of the tournament and the first game of the championship series. The first team to do that was the 2006 Oregon State Beavers.