| Dongjak B | |
|---|---|
| Single-member constituency for the National Assembly | |
 Location of the constituency | |
| District(s) | Dongjak District (part) |
| Region | Seoul |
| Electorate | 161,781 (2016) |
| Current constituency | |
| Created | 1988 |
| Seats | 1 |
| Party | People Power Party |
| Member | Na Kyung-won |
| Created from | Dongjak |
Dongjak B (Korean: 동작구 을) is a constituency of the National Assembly of South Korea. The constituency consists of part of Dongjak District, Seoul. As of 2016, 161,781 eligible voters were registered in the constituency.