Pierre Augustin Moncousu (; August 1756 â 6 July 1801) was a French naval officer.
Moncousu was born in Baugé. He took part in the Battle of Groix commanding Redoutable, and died at the First Battle of Algeciras.
Moncousu's first-born son was also named Pierre-Augustin, and served in the Navy as well. Ensign in 1815, he was expelled from the Navy after fomenting a plot with five other officers to ferry Napoléon from Rochefort to the United States.