Madliena (formerly spelt Madalena, ) is an area in Swieqi, Malta, formerly part of the adjacent town of Għargħur. It takes its name from a chapel dedicated to St. Mary Magdalene, which was built in the area in 1490. Madliena was known as Ħal Samudi in Medieval times, and is listed as such together with Għargħur in documents of the time. The chapel was used as a watch post by Maltese insurgents during the French blockade of 1798–1800. It was demolished by the British military in 1880 to make way for Fort Madalena, one of the forts of the Victoria Lines. A new chapel was built nearby to replace the one demolished.