| Seodaemun A | |
|---|---|
| Single-member constituency for the National Assembly | |
 Location of the constituency | |
| District(s) | Seodaemun District (part) |
| Region | Seoul |
| Electorate | 130,042 (2024) |
| Current constituency | |
| Created | 1988 |
| Seats | 1 |
| Party | Democratic Party |
| Member(s) | Kim Dong-ah |
| Created from | Seodaemun–Eunpyeong |
Seodaemun A (Korean: 서대문구 갑) is a constituency of the National Assembly of South Korea. The constituency consists of parts of Seodaemun District, Seoul. As of 2024, 130,042 eligible voters were registered in the constituency. The constituency was created in 1988 from the Seodaemun–Eunpyeong constituency.