The Men's 100m butterfly event at the 2010 South American Games was held on March 28, with the heats at 10:45 and the Final at 18:10.
Medalists edit
| Gold | Silver | Bronze |
Albert Subirats Venezuela
|
Ben Hockin Paraguay
|
Gustavo Daniel Paschetta Argentina
|
Records edit
| Standing records prior to the 2010 South American Games | ||||
|---|---|---|---|---|
| World record |  Michael Phelps (USA)
|
49.82 | Rome, Italy | 1 August 2009 |
| Competition Record |  Julio Galofre (BRA)
|
55.41 | Buenos Aires, Argentina | 17 November 2006 |
| South American record | Albert Subirats (VEN)
|
50.65 | Rome, Italy | 31 July 2009 |
Results edit
Heats edit
| Rank | Heat | Lane | Athlete | Result | Notes |
|---|---|---|---|---|---|
| 1 | 3 | 4 | Albert Subirats (VEN)
|
55.51 | Q |
| 2 | 1 | 4 | Gustavo Paschetta (ARG)
|
55.57 | Q |
| 3 | 2 | 3 | Ben Hockin (PAR)
|
55.78 | Q |
| 4 | 1 | 5 |  Juan López Nieto (COL)
|
55.92 | Q |
| 5 | 3 | 5 | Marcos Barale (ARG)
|
56.26 | Q |
| 6 | 3 | 6 |  Mauricio Fiol (PER)
|
56.28 | Q |
| 7 | 1 | 3 | Jesus Casanova (VEN)
|
56.71 | Q |
| 8 | 3 | 3 | Andres Montoya (COL)
|
56.79 | Q |
| 9 | 2 | 5 | Jose Barrantes (PER)
|
56.89 | |
| 10 | 1 | 2 |  Marcelino Richaards (SUR)
|
56.96 | |
| 11 | 2 | 4 | Gabriel Mangabeira (BRA)
|
57.19 | |
| 12 | 3 | 2 |  Philippe Rodriguez (CHI)
|
57.80 | |
| 13 | 2 | 6 | Favio Alessandro Segovia (PAR)
|
58.11 | |
| 14 | 1 | 6 |  Joel Romeu (URU)
|
58.19 | |
| 15 | 2 | 2 |  Diego Eugenio Macias (ECU)
|
58.41 | |
| 16 | 2 | 7 | Ivan Marcelo Zavala (ECU)
|
1:00.21 | |
| 17 | 3 | 7 |  Alejandro Madde (BOL)
|
1:01.72 | |
| 18 | 1 | 7 |  Niall Roberts (GUY)
|
1:02.41 |
Final edit
| Rank | Lane | Athlete | Result | Notes |
|---|---|---|---|---|
 |
4 | Albert Subirats (VEN)
|
52.86 | CR |
 |
3 | Ben Hockin (PAR)
|
54.90 | |
 |
5 | Gustavo Daniel Paschetta (ARG)
|
54.99 | |
| 4 | 6 | Juan López Nieto (COL)
|
55.58 | |
| 5 | 2 | Marcos Barale (ARG)
|
56.46 | |
| 6 | 8 | Andres Montoya (COL)
|
56.91 | |
| 7 | 1 | Jesus Casanova (VEN)
|
57.00 | |
| 8 | 7 | Mauricio Fiol (PER)
|
57.79 |