Buk District (Korean: 북구; RR: Buk-gu; lit.

It stretches roughly from the Ring Road to Mohwa into the north and out to the coast in the east.

The dong of Buk-gu are: Jeongja Beach (정자 해수욕장) is the most popular in Ulsan and there are several raw fish restaurants and pleasant western restaurants-come-bars lining the coast road around here.

Especially the seaside course that connects Jujeon (주전)-Jengja (정자)-Gangdong (강동) is well known for the best drive course of Ulsan.

Ulsan's domestic airport (IATA Code: USN), which serves Seoul is located in Buk-gu.