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.