Ringturm, Office tower at Schottenring, Vienna, Austria

The Ringturm is an office building at Schottenring in Vienna standing 73 meters tall across 23 floors. Its facade is dominated by glass panels arranged in a clean post-war modern design.

Built from 1953 to 1955 to Erich Boltenstern's design, the Ringturm rose on the only Schottenring plot destroyed in the Second World War. Planned as one of two towers flanking the street, a "gate to the future", it was read as a sign of the western occupation zones' rising capitalism, a raised finger toward the Soviet zone across the Danube Canal. The second tower was dropped after 1955; the facade was renovated in 1996.

The name was chosen in a public competition from 6,502 suggestions, among them City-Haus and Sonnblick-Haus; one entrant received an honorary fee of 2,000 schillings. Since 1998 the entrance hall has shown the free exhibition series "Architektur im Ringturm", devoted to architecture in Austria and Central and Eastern Europe. ORF programmes such as Lebens-Künstler with Helmut Zilk and Kabarett im Turm were recorded in the building.

The building stands directly above Schottenring subway station, making it easy to reach by public transport. A weather beacon with 117 lamps at the top displays forecasts through color and light patterns.

Each summer since 2006 the tower has been wrapped in printed mesh banners rather than fitted with installations: 30 vertical strips about 3 metres wide and 63 or 36 metres long, covering roughly 4,000 square metres. Artists have included Arnulf Rainer (Schleier der Agnes, 2014) and Xenia Hausner (Familiensinn, 2011); there was no wrapping in 2020.