The men's 200 metre backstroke heats and semifinals at the 2010 Youth Olympic Games took place on August 20 at the Singapore Sports School.
| 1:59.18 | ||
| 1:59.39 | ||
| 2:01.60 |
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 1 | 4 | Matuesz Wysoczynski | 2:04.80 | Q | ||
| 2 | 2 | Lavrans Solli | 2:04.87 | Q | ||
| 3 | 5 | Andrii Kovbasa | 2:07.11 | |||
| 4 | 3 | Alexis Manacas da Silva Santos | 2:07.68 | |||
| 5 | 7 | Bastien Soret | 2:09.56 | |||
| 6 | 1 | Mark Sammut | 2:16.85 | |||
| 6 | Mans Hjelm | DNS |
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 1 | 5 | Ivan Biondić | 2:03.67 | Q | ||
| 2 | 6 | Balazs Zambo | 2:04.38 | Q | ||
| 3 | 4 | Yusuke Yamagishi | 2:05.32 | Q | ||
| 4 | 3 | Christian Diener | 2:05.44 | |||
| 5 | 2 | Chad Bobrosky | 2:06.51 | |||
| 6 | 7 | Ondrej Palatka | 2:13.98 | |||
| 7 | 1 | Alan Wladimir Abarca Cortes | 2:17.25 |
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 1 | 4 | Péter Bernek | 2:00.49 | Q | ||
| 2 | 5 | Yakov Toumarkin | 2:02.04 | Q | ||
| 3 | 3 | Austin Ringquist | 2:05.36 | Q | ||
| 4 | 6 | Rainer Kai Wee Ng | 2:06.84 | |||
| 5 | 1 | Chien-Lung Lin | 2:08.85 | |||
| 6 | 7 | Max Ackermann | 2:09.18 | |||
| 2 | Bilal Achalhi | DSQ |
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 4 | Péter Bernek | 1:59.18 | ||||
| 5 | Yakov Toumarkin | 1:59.39 | ||||
| 6 | Balazs Zambo | 2:01.60 | ||||
| 4 | 3 | Ivan Biondić | 2:03.40 | |||
| 5 | 1 | Yusuke Yamagishi | 2:04.67 | |||
| 6 | 7 | Lavrans Solli | 2:04.75 | |||
| 7 | 8 | Austin Ringquist | 2:04.85 | |||
| 8 | 2 | Matuesz Wysoczynski | 2:05.01 |