Sukjeongmun (Korean: 숙정문; Hanja: 肅靖門; also known as North Gate) is one of the Eight Gates of Seoul in the Fortress Wall of Seoul, South Korea, which surrounded the city in the Joseon Dynasty.

In order to visit, identification such as a passport is required for access.

Being situated so close to the Royal Palace of the Joseon Dynasty, it was rarely used for receiving visitors, and had more of a ceremonious function.

The name Sukjeongmun means literally “Rule Solemnly Gate.”[3] It is one of the Four Great Gates (사대문) in the Fortress Wall of Seoul.

After the infiltration of North Korean agents during the Blue House Raid in 1968, both the gate and the surrounding area were closed off for security reasons.