Castlewood may refer to:

Places

United States

* Castlewood, Colorado, a town * Castlewood, South Dakota, a town * Castlewood, Virginia, a city ** Castlewood High School ** Castlewood (Chesterfield, Virginia), a historic plantation listed on the National Register of Historic Places * Castlewood State Park, near Ballwin, Missouri * Castlewood Canyon State Park, near Franktown, Colorado

Canada

* Orangeville/Castlewood Field Aerodrome, in Ontario * Castlewood Lake, Lakes of Biggar, Saskatchewan#Castlewood Lake, a major lake in Biggar, Saskatchewan

Other

* Castlewood Orb Drive, a removable storage disk drive * Castlewood - the name of fictional locations (in Hampshire and in Virginia) in novels by William Makepeace Thackeray {{disambiguation