Swimming at the 2014 South American Games – Men's 100 metre butterfly

The men's 100 metre butterfly competition at the 2014 South American Games took place on March 9 at the Estadio Nacional. The last champion was Albert Subirats of Venezuela.

This race consisted of two lengths of the pool, all in butterfly.

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

Results
All times are in minutes and seconds.

Heats
The first round was held on March 9, at 11:34.

Final
The final was held on March 9, at 18:48.