Lee's Mill Earthworks is a historic archaeological site located at Newport News, Virginia.

Heavy rains and massive earthen fortifications defending the river crossing stopped the Union troops from proceeding to Richmond.

Confederate Major General John B. Magruder's extensive defensives beginning at Lee's Mill and extending to Yorktown along the Warwick River caused the Union Army of the Potomac Commander Major General George B. McClellan to initiate a month-long siege of the Warwick-Yorktown Line which lasted until May 3, 1862 and contributed to the eventual failure of McClellan's campaign.

The earthen fortifications remain visible in many locations, including Newport News Park and the Lee's Mill subdivision.

This article about a property in Newport News, Virginia on the National Register of Historic Places is a stub.