The Cow Neck Peninsula is a peninsula in Nassau County, New York, on the North Shore of Long Island, in the United States. The Cow Neck Peninsula is also known as Manhasset Neck or simply as Cow Neck.
An aerial photo of the North Shore of Nassau County on Long Island, looking west. The Cow Neck Peninsula is visible as the first peninsula at the center, with Manhasset Bay immediately above it and Hempstead Harbor immediately below it.