Gustaf Church, part of the Church of Sweden Abroad, is the church of the Swedish congregation in Copenhagen. It was built from 1907 to 1911 to the design of Theodor Wåhlin and is named after King Gustaf V of Sweden. The church is designed in the Jugendstil style and is built in a hard-burnt brownish brick. The complex includes church halls, community center, offices, rectory, staff houses, archives and storage rooms.

As had been the case with St. Alban's English Church two decades earlier, a site was provided by the Danish state on the bank of the moat surrounding Kastellet, although on the opposite, north-western, corner, on the site of the former Grønlands Bastion.

The foundation stone was laid in 1908 at a ceremony attended by both the Swedish and Danish royal couples, and the new church was consecrated in 1911. The Danish architect Gotfred Tvede supervised the construction assisted by Alf Jørgensen.