The Timothy Mills House is a historic house built c. 1740 and located at 27 Mills Street in the town of Morristown in Morris County, New Jersey.

[3] It was added to the National Register of Historic Places on February 24, 1975, for its significance in architecture.

[4] Timothy Mills, born in Jamaica, Long Island, came to Morristown with his brother around 1740.

The one and one-half story house has 18th century vernacular style.

According to the nomination form, it is the oldest extant building in Morristown.