The Sager House (Swedish: Sagerska huset) or Sager Palace (Sagerska palatset) is the official residence of the Prime Minister of Sweden, located at Strömgatan 18 in central Stockholm.

[1] The Sager House is located in the Stockholm borough of Norrmalm, on the street Strömgatan, on the north side of the river Norrström.

The Sager House lies between: Rosenbad, the Government Chancellery (on the west); and the Ministry for Foreign Affairs (the former Arvfurstens Palats) and the Royal Swedish Opera on Gustav Adolfs torg (on the east).

In 1988 the building was purchased by the Swedish State to be turned into the official residence of the Prime Minister of Sweden.

In 1893 Robert Sager had the palace remodeled, including the addition of a new floor within a Mansard roof and a French Baroque Revival style facade with Neo-Rococo details, that are still seen.