Rastaborg, Manor house in Ekerö Municipality, Sweden.

Rastaborg is a manor house in Ekerö Municipality, Sweden, with a main building featuring tiled stoves, an open fireplace, and ornamental plasterwork in its rooms. The estate also has two adjoining outbuildings, a gatehouse, a garage, and gardens with fruit trees.

The manor dates to the 17th century, when builders from southern Europe laid the foundations of the current structure. Over the following centuries, the property changed hands several times and was gradually expanded into the estate it is today.

The name comes from Johan Skytte Rasta, who bought the estate in the late 17th century; Maria Skytte, married to Count Gustaf Adam Banér, later sold the original castle building to Hans Hirsch. The estate then passed between noble families by purchase or inheritance. The surviving wing now houses the Kilman Institute, a health institute for elite athletes and the public, and the former stables are run as a pony riding school and a section for private riding horses.

The remaining wing houses the Kilman Institute, a health institute for elite athletes and the public, so parts of the building are in active use. The former estate stables are now run in two sections: a pony riding school and a part for privately owned horses. The estate is owned by Menhammar.

The remaining wing houses the Kilman Institute, a health institute founded by Charlotte and Ulf Kilman for elite athletes and the general public. The estate's former stables are now run in two parts: a pony riding school and a section for privately owned riding horses.