USS John Sealy (SP-568)

USS John Sealy (SP-568), also spelled John Sealey, was a United States Navy minesweeper in commission during 1917.

John Sealy was built as a commercial steam tug of the same name in 1910 at West Lake, Louisiana. On 25 April 1917, the U.S. Navy acquired her from her owner, D. M. Picton, for use as a minesweeper on the section patrol during World War I. She was commissioned as USS John Sealy (SP-568).

After brief service as a minesweeper, John Sealy was returned to her owner on 10 August 1917.