The Adhan also written as Adhaan, Azan, Azaan or Athan, also called Ezan in Turkish, is the Islamic call to prayer, recited by the mu'azzin at prescribed times of the day. The root of the word is ʾadhina meaning "to listen, to hear, be informed about". Another derivative of this word is ʾudhun , meaning "ear".

Adhan is called out by a mu'azzin from the mosque five times a day, traditionally from the minaret, summoning Muslims for obligatory (fard) prayer (salat). A second call, known as the Iqamah then summons Muslims to line up for the beginning of the prayers. The main purpose behind the multiple loud pronouncements of adhan in every mosque is to make available to everyone an easily intelligible summary of Islamic belief.[citation needed] In modern times, loudspeakers have been installed on minarets for this purpose.