Radiohuset, Broadcasting headquarters in Östermalm, Stockholm, Sweden.

Radiohuset is the headquarters of Sveriges Radio, an H-shaped complex on Oxenstiernsgatan in Östermalm. Its northern office wing and lower southern studio wing are joined by Hangaren, a hall with a café and entrances to large studios used for productions with audiences. The site also holds the 1750s Stora Stenskjulet, a former military storehouse now used as a staff canteen.

Architects designed the building in the 1950s with the goal of creating a modern broadcast headquarters. After its completion in the early 1960s, it became the main center for national radio production.

Radiohuset's central Hangaren hall holds a cafeteria and the entrances to the large studios used for productions with a live audience, and glazed studio rooms used by P4 Stockholm. The building also houses Sveriges Radio's Grammofonarkivet music collection, while the TV archive in the basement belongs to SVT. Since 2025 Radiohuset has been part of Sweden's cultural canon.

Radiohuset stands on Oxenstiernsgatan beside TV-huset, near Filmhuset and the open Gärdet field. The complex is shaped like an H: the northern office block holds editorial and administrative rooms, the lower southern block the studios, joined by the Hangar hall with its entrances to the large audience studios. The site is a civil protected object, so access is limited to the public areas.

The site once belonged to the Svea Artillery Regiment, and traces remain: the Krutkällaren powder magazine, a 1750s stone storehouse now used as a staff canteen, and the Artillerikyrkogården military cemetery. The central grounds form Radiohusparken, landscaped by Walter Bauer.