The UC Riverside baseball team is the varsity intercollegiate baseball team of the University of California, Riverside, located in Riverside, California, United States. The program has been a member of the NCAA Division I Big West Conference since the start of the 2002 season. The program's home venue is the Riverside Sports Complex, located on the university's campus. Justin Johnson serves as the team's interim head coach starting with the 2021 season. The program has won two Division II national championships. It has appeared in four Division II College World Series and 12 NCAA tournaments. It has won eight California Collegiate Athletic Association championships and one Big West Conference championship. As of the start of the 2013 Major League Baseball season, 16 former Highlanders have appeared in Major League Baseball.

John Lee Lowenstein is an American former professional baseball outfielder and designated hitter who played in Major League Baseball (MLB) for the Cleveland Indians, Texas Rangers, and Baltimore Orioles.