Oyster Harbors is a gated community within the village of Osterville, Massachusetts. It is located on Grand Island. Oyster Harbors is surrounded by water with North Bay located to the north, West Bay located to the east, the Seapuit River to the south and Cotuit Bay to the west. Boating to the open waters of Nantucket Sound is unrestricted from Oyster Harbors and many homes in the community feature private, deep-water boat docks.
The Oyster Harbors Club was established in 1926 and features an 18-hole championship course designed by Donald Ross as well as John and Frederick Olmstead. The course was updated and restored to its original design in 2009 by Tom Doak of Renaissance Golf Design.