Commodore John Cassin (July 16, 1760 – March 24, 1822) was a United States Navy officer, who led the vital defense of Gosport Navy Yard during the War of 1812 and served as its Commandant.

[2] Ref: Daughters of the American Revolution, DAR, Application for Membership No.

During the American Revolutionary War, Cassin served in the Army and took part in the Battle of Trenton.

During the War of 1812 he led the United States Navy in the Delaware for the defense of Philadelphia.

After that he was the commanding officer of the Southern Naval station, Charleston, South Carolina.