The Maine Black Bears baseball team is the varsity intercollegiate baseball program of the University of Maine, located in Orono, Maine. It is the university's oldest athletic program, having begun play in 1881. It has been a member of the NCAA Division I America East Conference since its founding at the start of the 1990 season. Its home venue is Mahaney Diamond, located on the university's campus. Nick Derba is the head coach. He was named interim head coach prior to the 2017 season. The program has appeared in 16 NCAA tournaments and seven College World Series. In conference postseason play, it has won eight ECAC Tournaments and five America East tournaments. In conference regular season play, it has won five America East titles. 19 former Black Bears have appeared in Major League Baseball.

The College World Series (CWS), officially the NCAA Men's College World Series (MCWS), is a baseball tournament held each June in Omaha, Nebraska. The MCWS is the culmination of the National Collegiate Athletic Association (NCAA) Division I Baseball Championship tournament—featuring 64 teams in the first round—which determines the NCAA Division I college baseball champion. The eight participating teams are split into two, four-team, double-elimination brackets, with the winners of each bracket playing in a best-of-three championship series.