The men's discus throw competition of the athletics events at the 2015 Pan American Games took place on July 23 at the CIBC Pan Am and Parapan Am Athletics Stadium.

[1] The defending Pan American Games champion was Jorge Fernandez of Cuba.

Prior to this competition, the existing world and Pan American Games records were as follows: Each National Olympic Committee (NOC) was able to enter up to two entrants providing they had met the minimum standard (53.05) in the qualifying period (January 1, 2014 to June 28, 2015).

[2] All results shown are in meters.