Boo is a town (village) in the Swedish province of Stockholm County and belongs to the municipality Nacka. It is separated from Stockholm by the Skurusundet strait. The area was for a long time slightly populated with a few estates and peasant cottages. Today, the development consists mainly of villas. In the district Orminge created between 1967 and 1971 as part of the Swedish million program several apartment buildings in precast construction.