The Qadiriyya (Arabic: القادريه, Persian:قادریه, also transliterated Qadri, Qadriya, Kadri, Elkadri, Elkadry, Aladray, Adray, Kadray, Qadiri or Qadri), are members of the Qadiri Sufi order (tariqa). This derives its name from Syed Abdul Qader Gilani Al Amoli (1077–1166 CE, also transliterated as "Jilani" etc.) who was a native of the Iranian province of Mazandaran. The order relies strongly upon adherence to the fundamentals of Islam.
The order, with its many offshoots, is widespread, particularly in the Arabic-speaking world, and can also be found in Turkey, Indonesia, Afghanistan, India, Bangladesh, Pakistan, the Balkans, Israel, China, East and West Africa. A few famous travelers and writers such as Isabelle Eberhardt also belonged to the Qadiri order.