ISIL is the Islamic State of Iraq and the Levant (self-styled "Islamic State"), a militant Islamic group operating primarily in Iraq and Syria.

Look up ISIL in Wiktionary, the free dictionary.

ISIL or Isil may also refer to:

• International Standard Identifier for Libraries and Related Organizations, a standard for identifying organizations

• International Society for Individual Liberty, now known as Liberty International, a libertarian educational organization based in the United States
• Indian Society of International Law, an institution for the teaching, research and promotion of International Law in India

• Işıl, a feminine Turkish given name
• Information Structure Identification Language, based on GML

• ISIL-KP, or the Islamic State of Iraq and the Levant – Khorasan Province, an offshoot of the ISIL operating primarily in Afghanistan and South Asia

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