| Date | 18 August 2010 | 
|---|---|
| Status | YOG | 
| Location | Singapore Sports School, Singapore | 
| Participants | 16 from 16 countries | 
| Pos | Swimmer | NOC | R1 | Final | |||
|---|---|---|---|---|---|---|---|
| 1 | Christian Homer |  TTO | 26.31 (1 h1) | 26.36 (1) | Gold | ||
| 2 | Rainer Ng |  SGP | 26.37 (1 h2) | 26.45 (2) | Silver | ||
| =3 | Abdullah Al-Thuwaini |  KUW | 26.62 (=2 h1) | 26.46 (=3) | Bronze | ||
| =3 | Max Ackermann |  AUS | 26.63 (4 h1) | 26.46 (=3) | Bronze | ||
| 5 | Andriy Kovbasa |  UKR | 26.48 (2 h2) | 26.58 (5) | |||
| 6 | Alexis Santos |  POR | 26.62 (=2 h1) | 26.86 (6) | |||
| 7 | Mateusz Wysoczyński |  POL | 26.80 (5 h1) | 26.96 (7) | |||
| 8 | Pedro Costa |  BRA | 27.04 (3 h2) | 27.16 (8) | |||
| 9 | Måns Hjelm |  SWE | 27.23 (4 h2) | – | |||
| 10 | Martin Fakla |  SVK | 27.54 (5 h2) | – | |||
| 11 | Heshan Unamboowe |  SRI | 27.70 (6 h2) | – | |||
| 12 | Ruslan Baymanov |  KAZ | 27.94 (7 h2) | – | |||
| 13 | Abbas Raad |  LBN | 28.76 (6 h1) | – | |||
| 14 | Fouad Al-Atrash |  PLE | 30.80 (7 h1) | – | |||
| 15 | Ammar Ghanim |  YEM | 37.56 (8 h1) | – | |||
| Alan Abarca |  CHI | – (DQ h2) | – | 
Top 8 times advanced to final.
| Pos | Lane | Swimmer | NOC | Time | |||
|---|---|---|---|---|---|---|---|
| 1 | – | Christian Homer |  TTO | 26.31 | |||
| =2 | – | Abdullah Al-Thuwaini |  KUW | 26.62 | |||
| =2 | – | Alexis Santos |  POR | 26.62 | |||
| 4 | – | Max Ackermann |  AUS | 26.63 | |||
| 5 | – | Mateusz Wysoczyński |  POL | 26.80 | |||
| 6 | – | Abbas Raad |  LBN | 28.76 | |||
| 7 | – | Fouad Al-Atrash |  PLE | 30.80 | |||
| 8 | – | Ammar Ghanim |  YEM | 37.56 | 
| Pos | Lane | Swimmer | NOC | Time | |||
|---|---|---|---|---|---|---|---|
| 1 | – | Rainer Ng |  SGP | 26.37 | |||
| 2 | – | Andriy Kovbasa |  UKR | 26.48 | |||
| 3 | – | Pedro Costa |  BRA | 27.04 | |||
| 4 | – | Måns Hjelm |  SWE | 27.23 | |||
| 5 | – | Martin Fakla |  SVK | 27.54 | |||
| 6 | – | Heshan Unamboowe |  SRI | 27.70 | |||
| 7 | – | Ruslan Baymanov |  KAZ | 27.94 | |||
| – | Alan Abarca |  CHI | – | 
| Pos | Lane | Swimmer | NOC | Time | |||
|---|---|---|---|---|---|---|---|
| 1 | – | Christian Homer |  TTO | 26.36 | |||
| 2 | – | Rainer Ng |  SGP | 26.45 | |||
| =3 | – | Max Ackermann |  AUS | 26.46 | |||
| =3 | – | Abdullah Al-Thuwaini |  KUW | 26.46 | |||
| 5 | – | Andriy Kovbasa |  UKR | 26.58 | |||
| 6 | – | Alexis Santos |  POR | 26.86 | |||
| 7 | – | Mateusz Wysoczyński |  POL | 26.96 | |||
| 8 | – | Pedro Costa |  BRA | 27.16 |