The Harbour lighthouse in Howth is a historic aid to navigation situated on the East pier of the harbour. It was built in the early 19th century to help guide shipping into the newly constructed harbour, which acted as the terminus for the packet service between Ireland and England. In 1982 it was decommissioned and replaced by a modern pole light on an adjacent extension of the pier.

Howth is an affluent peninsular village and outer suburb of Dublin, Ireland. The district as a whole occupies the greater part of the peninsula of Howth Head, which forms the northern boundary of Dublin Bay, and includes the island of Ireland's Eye, which holds multiple natural protection designations.