Whitney Mansion, also known as Hollybush Mansion, is a historic house located on the campus of Rowan University in Glassboro, Gloucester County, New Jersey. It was used as the Rowan University President's Residence until 1998. Since 2003, Rowan University has spent more than $3 million to restore the mansion, which is now used as a meeting place and museum.

Originally the home of the Whitney family, it was the first of its kind in South Jersey, setting a precedent with its Italianate architectural style. Its interior decorations attest to this precedent, featuring significantly unique elements such as the trompe de l'oeil ceilings in the parlor and the Summit Room, as well as the painted glass archway above and around the front door. The stone used in the construction of Hollybush was New Jersey Ironstone, a sedimentary type of stone found in the low hills and ridges of South Jersey.

In 1967, the mansion hosted the Glassboro Summit Conference, a summit meeting between United States President Lyndon B. Johnson and Soviet Union Premier Alexei Kosygin.

The mansion was built in 1849 and was added to the National Register of Historic Places on December 5, 1972, for its significance in architecture and politics/government.

• Rowan University
• National Register of Historic Places listings in Gloucester County, New Jersey

• Media related to Hollybush Mansion at Wikimedia Commons
• "Hollybush". Historical Marker Database.