USNS Joshua Humphreys (T-AO-188) is a Henry J. Kaiser-class replenishment oiler of the United States Navy.

Joshua Humphreys, the second ship of the Henry J. Kaiser class, was specially built for the Military Sealift Command (MSC).

Joshua Humphreys served in the United States Atlantic Fleet under MSC control until taken out of active service on 29 June 1996, the second ship of her class to be deactivated.

In March 2010 Atlantic Marine in Philadelphia was awarded a $12.8 million contract for the reactivation of the Joshua Humphreys.

[1] Upon reactivation, she joined the US Fifth Fleet in support of counter-piracy and counter-terrorism operations in the Indian Ocean and Gulf area.