Oak Dell, also known as the Dr. Granville M. White House, is a historic mansion located at the corner of Franklin Street and Madison Avenue in the town of Morristown in Morris County, New Jersey.

Part of the Morristown Multiple Resource Area (MRA), it was listed on the National Register of Historic Places on November 13, 1986, for its significance in architecture.

[3] The two and one-half story house was built in 1897 and features Colonial Revival architectural style.

The large entry portico has a triangular pediment supported by Corinthian columns.

It was acquired by Grenville H. White of the Mutual Life Insurance Company of New York in 1910.