Baseball competitions at the 2015 Pan American Games in Toronto was held from July 11 to 26 at the Pan Am Ball Park, in Ajax, Ontario.

The 2015 Pan American Games, officially the XVII Pan American Games and commonly known as the Toronto 2015 Pan-Am Games, were a major international multi-sport event celebrated in the tradition of the Pan American Games, as governed by Pan American Sports Organization (PASO). The games were held from July 10 to 26, 2015 in Toronto, Ontario, Canada; preliminary rounds in certain events began on July 7, 2015. These were the third Pan American Games hosted by Canada, and the first in the province of Ontario. The Games were held at venues in Toronto and 17 other Golden Horseshoe communities. The Pan American Games and 2015 Parapan American Games were organized by the Toronto Organizing Committee for the 2015 Pan and Parapan American Games (TO2015).