The men's 100 metre butterfly competition of the swimming events at the 2011 Pan American Games took place on 20 October at the Scotiabank Aquatics Center. The defending Pan American Games champion was Kaio de Almeida of Brazil.

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

Records Prior to this competition, the existing world and Pan American Games records were as follows: World record49.82Rome, ItalyAugust 1, 2009Pan American Games record52.05Rio de Janeiro, BrazilJuly 18, 2007

Qualification Each National Olympic Committee (NOC) was able to enter up to two entrants providing they had met the A standard (54.6) in the qualifying period (January 1, 2010 to September 4, 2011). NOCs were also permitted to enter one athlete providing they had met the B standard (56.2) in the same qualifying period.

Results All times are in minutes and seconds.

KEY: q Fastest non-qualifiers Q Qualified GR Games record NR National record PB Personal best SB Seasonal best

Heats The first round was held on October 20. Rank Heat Lane Name Nationality Time Notes 1 2 5 Gabriel Mangabeira 52.95 QA 2 3 5 Christopher Brady 53.67 QA 3 3 3 Omar Pinzón 53.76 QA 4 1 3 Shaune Fraser 53.83 QA 5 3 4 Albert Subirats 53.84 QA 6 2 3 Benjamin Hockin 53.87 QA 7 2 4 Kaio de Almeida 53.88 QA 8 1 4 Eugene Godsoe 54.21 QA 9 1 5 Octavio Alesi 54.51 QB 10 3 2 Mauricio Fiol 54.56 QB 11 1 2 Israel Duran 55.18 QB 12 2 2 Pablo Marmolejo 55.27 QB 13 3 7 Alex Hernandez 55.28 QB 14 3 6 Marcos Barale 55.31 QB 15 1 6 Jose Lobo 57.18 QB 2 6 Brett Fraser DNS 2 7 Niall Roberts DNS

B Final The B final was also held on October 20. Rank Lane Name Nationality Time Notes 9 4 Octavio Alesi 54.15 10 5 Mauricio Fiol 54.26 11 7 Marcos Barale 54.77 12 3 Israel Duran 54.94 13 6 Pablo Marmolejo 55.00 14 2 Alex Hernandez 55.63 15 1 Jose Lobo 56.10

A Final The A final was held on October 20. Rank Lane Name Nationality Time Notes 2 Albert Subirats 52.37 8 Eugene Godsoe 52.67 5 Christopher Brady 52.95 4 6 Shaune Fraser 52.96 5 3 Omar Pinzón 53.17 6 4 Gabriel Mangabeira 53.24 7 7 Benjamin Hockin 53.43 8 1 Kaio de Almeida 53.62

References