Oyster Bay may refer to:

• Oyster Bay, New South Wales, a suburb of Sydney
• Great Oyster Bay, a bay on the east coast of Tasmania

• Oyster Bay station (MTR), a proposed MTR station on the Tung Chung line in Hong Kong

• Oyster Bay, Eastern Cape, a small coastal hamlet and resort

• Oyster Bay, Tanzania, a resort town and suburb of Dar es Salaam

• Oyster Bay (town), New York, a town in Nassau County on Long Island, New York
  • Oyster Bay Cove, New York, a village within the town of Oyster Bay
  • Oyster Bay (hamlet), New York, a hamlet within the town of Oyster Bay
    • Oyster Bay (inlet), also Oyster Bay Harbor, an inlet on the north shore of Long Island, New York
    • Oyster Bay station, the terminus of the Long Island Rail Road Oyster Bay Branch
  • South Oyster Bay, a lagoon off the southern shore of Long Island, New York
• Massapequa, New York, which was called South Oyster Bay until late in the 19th century
• Oyster Bay (Puget Sound), a small bay in Totten Inlet, at the south end of Puget Sound in Washington

• USS Oyster Bay (AGP-6), a United States Navy motor torpedo boat tender and later seaplane tender

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• All pages with titles beginning with Oyster Bay