Osterville is one of seven villages within the town of Barnstable, Massachusetts, United States. The village of Osterville is located on the south side of Barnstable on Nantucket Sound. Osterville is a residential community that includes marshes, bays, ponds, a small lake, beaches, and a small business district. Notably, the village is home to the Crosby Yacht Yard; the Crosbys are America's oldest active wooden boat-building family.