Jongno (Korean: 종로구) is a constituency of the National Assembly of South Korea. The constituency consists solely of the Jongno District, Seoul. As of 2020, 134,516 eligible voters were registered in the constituency. In the course of the Democratic Party of Korea's primary election, Lee Nak-yeon, a member of the district's National Assembly, resigned.

Located at the heart of the Downtown Seoul, Jongno is home to Korea's major government offices and foreign embassies, and is often described as 'Korea's No. 1 political district' (정치 1번지). Including the current Jongno constituency and its historic A and B constituencies, three presidents were elected after being elected in Jongno.