Natirar is an estate spanning 491 acres in Peapack-Gladstone, Far Hills and Bedminster, in Somerset County, New Jersey, United States. Its name is a reverse spelling of Raritan. The complex was built between 1905 and 1912, when the main residence was completed. In 2003 it was sold by the estate of Hassan II, late King of Morocco, to Somerset County, New Jersey, and is now administered by the Somerset County Park Commission.