The 2018 BYU Cougars baseball team represents Brigham Young University in the 2018 NCAA Division I baseball season. Mike Littlewood acts in his sixth season as head coach of the Cougars. The Cougars overcame all expectations in 2017 and claimed a tri-team championship in the regular season. Afterwards the Cougars won the West Coast Conference tournament for the first time in their history, claiming the conferences automatic bid to the NCAA tournament, the Cougars first tournament berth since 2002. The Cougars were placed in the Stanford Regional where they would go 1–2. The Cougars finished the season 38–21. For 2018 BYU was picked to finish first in the WCC Pre-season rankings.
2018 Roster
Schedule
! style="background:#FFFFFF;color:#002654;"| Regular season
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|- align="center" bgcolor="ccffcc" | February 16 || at CSUN || – || Matador Field || Big West TV || 5–3 || Jake Suddreth (1–0) || Matt Acosta (0–1) || Riley Gates (1) || 512 || 1–0 || – |- align="center" bgcolor="ffbbb" | February 17 || at CSUN || – || Matador Field || Facebook || 9–10 || Hayden Shenefield (1–0) || Drew Zimmerman (0–1) || None || 451 || 1–1 || – |- align="center" bgcolor="ccffcc" | February 17 || at CSUN || – || Matador Field || Facebook || 6–5 || Hayden Rogers (1–0) || Wesley Moore (0–1) || Riley Gates (2) || 590 || 2–1 || – |- align="center" bgcolor="ccffcc" | February 19 || at CSUN || – || Matador Field || Big West TV || 10–8 || Bo Burrup (1–0) || Matt Acosta (0–2) || || 276 || 3–1 || – |- align="center" bgcolor="ffbbb" | February 22 || at Hawai'i || – || Les Murakami Stadium || Facebook || 2–3 || Kyle Hatton (1–0) || Blake Inouye (0–1) || Dylan Thomas (3) || 2,211 || 3–2 || – |- align="center" bgcolor="ccffcc" | February 23 || at Hawai'i || – || Les Murakami Stadium || Facebook || 4–3 (10) || Riley Gates (1–0) || Colin Ashworth (0–1) || Jake Suddreth (1) || 2,804 || 4–2 || – |- align="center" bgcolor="ccffcc" | February 24 || at Hawai'i || – || Les Murakami Stadium || Facebook || 4–3 || Hayden Rogers (2–0) || Neil Uskali (1–1) || Jake Suddreth (2) || 2,757 || 5–2 || – |- align="center" bgcolor="ffbbb" | February 24 || at Hawai'i || – || Les Murakami Stadium || Facebook || 3–8 || Logan Pouelsen (1–0) || Kenny Saenz (0–1) || None || 2,757 || 5–3 || – |-