Athletics at the 2011 Pan American Games – Men's 800 metres

The men's 800 metres sprint competition of the athletics events at the 2011 Pan American Games took place between the 27 and 28 of October at the Telmex Athletics Stadium. The defending Pan American Games champion was Yeimer López of Cuba.

Records
Prior to this competition, the existing world and Pan American Games records were as follows:

Qualification
Each National Olympic Committee (NOC) was able to enter one athlete regardless if they had met the qualification standard. To enter two entrants both athletes had to have met the minimum standard (1:49.0) in the qualifying period (January 1, 2010 to September 14, 2011).

Results
All times shown are in seconds.

Semifinals
Held on October 27. The first three in each heat and the next two fastest advanced to the finals.

Jon Rankin was advanced to the final due to interference.

Final
Held on October 28.