Gangbuk A (Korean: 강북구 갑) is a constituency of the National Assembly of South Korea.

Since its establishment, Gangbuk A has more often elected members of centre-left, liberal parties to represent the constituency.

Kim Won-gil of the centrist-liberal National Congress for New Politics was the first member to represent the constituency.

[7] Cheong won back the seat in 2016 as a member of the conservative Saenuri Party, securing 39.52% of the vote and narrowly beating out Democratic challenger Cheon Jun-ho.

[9] Cheon won re-election in 2024 in a one-on-one battle against Jun Sang-bum of the conservative People Power Party.