| Aarno Ruusuvuori | |
| Nationality: | Finnish |
| Birth Name: | Aarno Emil Ruusuvuori |
| Birth Date: | 1925 1, df=yes |
| Birth Place: | Helsinki, Finland |
| Practice: | Arkkitehtitoimisto Aarno Ruusuvuori |
| Significant Buildings: | Tapiola Church, Espoo Weilin & Göös Print Works, Espoo Helsinki City Hall, Helsinki Hyvinkää Church |
| Significant Projects: | Helsinki City Hall restoration and modernization, Helsinki Finnish National Museum extension |
Aarno Emil Ruusuvuori (14 January 1925, Kuopio – 22 February 1992, Helsinki) was a Finnish architect, professor and director of the Museum of Finnish Architecture. He studied at the Helsinki University of Technology, completing his studies in 1951.
Ruusuvuori was one of the most renowned architects in Finland during the 1960s, well known for designing modernist buildings, often using exposed concrete, often in the brutalist style. His best-known works are the Tapiola Church and the Weilin & Göös Print Works in Espoo (1964–66) and the Hyvinkää Church (1961).
Ruusuvuori created much controversy during the early 1970s with his ambitious plans for the modernisation of the Helsinki City Hall in the very centre of Helsinki. The City Hall takes up an entire city block, consisting mostly of several buildings built in the neo-classical style, including buildings designed by C.L. Engel. Ruusuvuori preserved the main festival hall but demolished many of the interiors, preserving only their facades. This saga, together with many other developments where historical buildings were demolished was captured in an influential book by architects Vilhelm Helander and Mikael Sundman, titled Kenen Helsinki? (Whose Helsinki?) (1970). Ruusuvuori continued to work on the large scheme throughout the 1970s, completing it in 1988, but toned down the scale of the earlier proposed demolitions.
The Weilin & Göös Print Works (1964–66), Espoo, designed by Ruusuvuori, was closed down at the end of the 20th century. It was then purchased by the City of Espoo, which had it converted into the WeeGee Exhibition Centre for culture and the arts, which opened its doors to the public in October 2006.