The 2008 LSU Tigers baseball team represented Louisiana State University in the NCAA Division I baseball season of 2008. This was the final year for the team in the original Alex Box Stadium. A new stadium was built during the season and opened on opening day of the 2009 season. The team was coached by Paul Mainieri who was in his second season at LSU. In his first year at LSU, Mainieri's team posted a 29–26–1 record and failed to make the SEC Tournament or the NCAA Tournament. In a dramatic turnaround, Mainieri led the Tigers to an unexpected appearance in the 2008 College World Series.