Gregory County may refer to:
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Gregory County, South Dakota
Gregory County is a County (United States), county in the U.S. state of South Dakota. As of the 2020 United States census, 2020 census, the population was 3,994. Its county seat is Burke, South Dakota, Burke. The county was created in 1862 and o ...
, United States
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Gregory County, New South Wales
Gregory County is one of the 141 Cadastral divisions of New South Wales. It is bordered by Bogan River in the west, and includes the area to the northeast of Nyngan, New South Wales, Nyngan. It includes the Macquarie Marshes Nature Reserve, and ...
, Australia
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