Najaf (Arabic: النجف; Transliterated: An Najaf; Persian: نجف) is a city in Iraq. It is about 160 km south of Baghdad. In 2008, about 900.583 people lived there. The city is the capital of Najaf province. It is one of the seven holy cities of Shi'a Islam. It is the center of Shia political power in Iraq.
The city is home to the Imam Ali Mosque, where Alī ibn Abī Ṭālib, the fourth caliph is buried. Shia Muslims consider the mosque to be the third holiest Islamic site.