USNS Leroy Grumman (T-AO-195) is a Henry J. Kaiser-class replenishment oiler of the United States Navy.

She entered non-commissioned U.S. Navy service under the control of the Military Sealift Command with a primarily civilian crew on 3 August 1989.

In early 2012, she joined several British warships from the Royal Navy including the aircraft carrier HMS Illustrious and fleet flagship HMS Bulwark to partake in Exercise Joint Warrior and other training missions with warships from the United Kingdom, Norway and the Netherlands.

[3] During the coronavirus pandemic, on 30 April 2020, USNI News reported that two civilian mariners on Leroy Grumman had been infected with SARS-CoV-2.

The source of the infection was unclear, but a spokesperson for Military Sealift Command stated that there were outside contractors at the shipyard who had tested positive earlier.