Former Hokkaidō Government Office, Historical government building in Sapporo, Japan.

The Former Hokkaidō Government Office is a baroque revival administrative building in the Kita-san-jo Nishi district of Sapporo. The structure displays deep red brick walls with white corner trim and window frames, a central octagonal dome above the entrance, and two side wings extending symmetrically from the main body.

The first Kaitakushi office on this site, planned with American adviser Horace Capron, burned in 1879. The brick replacement was completed in 1888 under governor Michitoshi Iwamura, designed by Hirai Seijirō of the Hokkaidō Government civil engineering section. A 1909 fire gutted the interior but left the brick walls largely intact; restoration ended in 1911. Part of the building stayed in administrative use as archives and meeting rooms after 1968.

The name Akarenga, meaning red brick, is commonly used by locals when referring to this building. Visitors can walk through rooms filled with historical documents from the Meiji era that show how administration and settlement were organized across the island.

The building sits roughly eight walking minutes from Sapporo Station and admission is free for all areas including exhibition rooms and archives. Most rooms are located on the ground floor and can be reached without stairs, while the courtyard offers a pathway through the gardens.

The octagonal dome was not part of the original design; it was added later and removed within a few years because it made the roof leak and sway in strong winds. It was rebuilt in 1968 for the building's 100th anniversary. The walls hold about 2.5 million bricks made in Toyohira and Shiroishi, now wards of Sapporo.