Gyeongnam Regional Government Complex, Joint Government Building in Masanhappo District, South Korea.

Gyeongnam Regional Government Complex is a modern administrative building with eleven floors above ground and one basement level, covering about 26,160 square meters. Inside are offices for multiple government agencies, conference halls, meeting rooms, and specialized spaces for handling administrative services.

The building was constructed between March 2011 and March 2013 to house government agencies that were displaced by the Masan Marine City Construction Project. The complex was created to bring these departments together in a new, centrally located facility.

The building was planned and commissioned as the Government Masan Regional Joint Office Building, but by its opening on 18 June 2013 Masan had been merged into Changwon, so the name was changed to Gyeongnam. The name Government Changwon Regional Joint Office Building was avoided because of concern about worsening public sentiment in the Masan area.

The complex stands at 10 Jae2budu-ro, Masanhappo-gu, Changwon, near Masan Port. Eight agencies occupy the main building, including the Masan Regional Maritime Affairs and Port Office, Masan Customs, the National Masan Quarantine Station, and the Changwon Immigration Office. Check which agency handles your matter before arriving, since each has its own counter. The Gyeongnam Office Management Division of the Government Buildings Management Office handles space allocation and upkeep.

The building was planned and commissioned as the Government Masan Regional Joint Office Building, but by the time it opened on 18 June 2013, Masan had been merged into Changwon and the city name no longer existed. It became the only such complex named after a province rather than a city; the name "Government Changwon Regional Joint Office Building" was avoided over concerns about worsening public sentiment in the Masan area.