| Mapo A | |
|---|---|
| Single-member constituency for the National Assembly | |
 Location of the constituency | |
| District(s) | Mapo District (part) |
| Region | Seoul |
| Electorate | 157,500 (2020) |
| Current constituency | |
| Created | 1988 |
| Seats | 1 |
| Party | People Power |
| Member(s) | Cho Jung-hun |
| Created from | Mapo–Yongsan |
Mapo A (Korean: 마포구 갑) is a constituency of the National Assembly of South Korea. The constituency consists of portions of Mapo District, Seoul. As of 2020, 157,500 eligible voters were registered in the constituency. The constituency was created in 1988 from the Mapo–Yongsan constituency.