USNS John Lenthall (T-AO-189) is a Henry J. Kaiser-class replenishment oiler of the United States Navy.

John Lenthall, the third ship of the Henry J. Kaiser class, was laid down at Avondale Shipyard, Inc., at New Orleans, Louisiana, on 15 July 1985 and launched on 9 August 1986.

John Lenthall served in the United States Atlantic Fleet under MSC control until taken out of active service on 11 November 1996 and placed in reserve.

No one aboard John Lenthall suffered injuries, and she sustained only limited damage to outside structures and equipment.

On 9 March 2021, John Lenthall replenished Italian aircraft carrier Cavour in the Western Atlantic Ocean.