The men's baseball tournament at the 2015 Pan American Games in Toronto, Canada was held at the Pan Am Ball Park in Ajax, Ontario from July 11 to 19. Two fields hosted competition, with the main one holding 4,000 spectators and the secondary one holding 1,000 seats. For these Games, the men competed in a 7-team tournament. The teams were grouped into one single pool and all teams played each other in a round-robin preliminary round. The top four teams will advance to the semifinals.