Boo, sometimes referred to as Saltsjö-Boo, is a locality situated on the island of Värmdö in Sweden's Stockholm archipelago.

From an administrative perspective, it is located in Nacka Municipality and Stockholm County, and has 24,052 inhabitants as of 2010.

[1] Boo was an independent municipality until 1970.

The following sports clubs are located in Boo:

This article about a location in Stockholm County, Sweden is a stub.