Walter Kennedy (ca. 1695 – July 21, 1721) was an Irish pirate who served as a crew member under Howell Davis and Bartholomew Roberts.
Kennedy served in the Royal Navy during the War of Spanish Succession, where he heard tales of pirates from Henry Morgan to Henry Every, and dreamed of becoming a pirate himself. He was a crew member on the sloop-of-war Buck, part of the fleet that Woodes Rogers took to the Bahamas in 1718 to suppress piracy there.
Woodes sent the Buck to Havana with a letter for the Spanish governor assuring that official that he was not a pirate, but was in Nassau to suppress piracy. Some recently pardoned pirates were added to the crew of the Buck, and before it reached Havana they, along with some of the original crew, including Kennedy, mutinied, killing the captain, Jonathan Bass, and other crew members who did not join the mutiny