Dumas House is a fourteen-storey office building constructed in Perth, Western Australia, during the 1960s.

The building is located close to St Georges Terrace, Kings Park, and Parliament House.

[1] Originally called "Government Building", Dumas House was opened by Premier David Brand on 4 March 1966.

[1] Dumas House is an example of the post-war International Style of architecture, with a modular grid building plan, glazed panelling and an open piazza.

[1] The International style was adapted for Australian conditions by adding horizontal slabs that project from the sides of the building and provide shade.