The men's 200 metre butterfly heats and final at the 2010 Youth Olympic Games took place on August 20 at the Singapore Sports School.
| 1:55.89 | ||
| 1:56.85 | ||
| 1:57.68 |
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 1 | 4 | Bence Biczó | 1:58.63 | Q | ||
| 2 | 5 | Chang Gyu-cheol | 2:02.50 | Q | ||
| 3 | 3 | Thomas Jobin | 2:04.72 | |||
| 4 | 2 | Joel Romeu | 2:06.02 | |||
| 5 | 6 | Melvin Herrmann | 2:06.83 | |||
| 6 | 1 | Homayoun Haghighijadid | 2:09.45 | |||
| 7 | 7 | Arnoscy Siahaan | 2:09.46 |
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 1 | 3 | Jordan Coelho | 2:00.37 | Q | ||
| 2 | 4 | Chad le Clos | 2:02.07 | Q | ||
| 3 | 5 | Zsombor Szana | 2:02.51 | Q | ||
| 4 | 6 | Ilya Lemaev | 2:04.16 | |||
| 5 | 2 | Jessie Lacuna | 2:06.38 | |||
| 6 | 1 | Zlatko Alić | 2:08.71 | |||
| 7 | Alessio Torlai | DNS | ||||
| 8 | Benjamin Gabbard | DNS |
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 1 | 4 | Marcin Cieślak | 2:01.69 | Q | ||
| 2 | 3 | Kyle McIntee | 2:01.93 | Q | ||
| 3 | 2 | Velimir Stjepanović | 2:02.04 | Q | ||
| 4 | 7 | Jakub Maly | 2:04.16 | |||
| 5 | 6 | Jun Isaji | 2:04.13 | |||
| 6 | 1 | Erich Peske | 2:05.09 | |||
| 7 | 5 | Yoo Kyusang | 2:08.28 | |||
| 8 | 8 | Sofyan El Gadi | 2:21.66 | NR |
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 4 | Bence Biczó | 1:55.89 | ||||
| 7 | Chad le Clos | 1:56.85 | ||||
| 3 | Marcin Cieślak | 1:57.68 | ||||
| 4 | 5 | Jordan Coelho | 1:59.18 | |||
| 5 | 1 | Chang Gyu-cheol | 1:59.35 | |||
| 6 | 6 | Kyle McIntee | 2:01.20 | |||
| 7 | 8 | Zsombor Szana | 2:01.52 | |||
| 8 | 2 | Velimir Stjepanović | 2:03.27 |