Kittery is a town in York County, Maine, United States. Home to the Portsmouth Naval Shipyard on Seavey's Island, Kittery includes Badger's Island, the seaside district of Kittery Point, and part of the Isles of Shoals. The town is a tourist destination known for its many outlet stores. It is the southernmost town in Maine.
Kittery is part of the Portland–South Portland–Biddeford, Maine metropolitan statistical area. The town's population was 9,490 at the 2010 census. Kittery may be the namesake of William Billings' 1783 anthem "Kittery", which is printed in the Shenandoah Harmony and Missouri Harmony shape note tunebooks, but because the song was published after the incorporation of the town, this is debated.
English settlement around the natural harbor of the Piscataqua River estuary began about 1623. By 1632 it was protected by Fort William and Mary on today's New Hampshire side of the river; in 1689 defensive works that later became Fort McClary in Kittery Point were added on today's Maine side to the north.
Kittery was incorporated in 1647, staking a claim as the "oldest incorporated town in Maine." It was named after the birthplace of a founder, Alexander Shapleigh, from his manor of Kittery Court at Kingswear in Devon, England.