ILS or ils may refer to:
Organizations ILS Law College, of the Indian Law Society Institute for Labor Studies, a Philippine policy research agency International Launch Services International Life Saving Federation International Lenin School
Science and technology Instrument landing system, for aircraft Integrated library system, an enterprise resource planning system for libraries Iterated local search, in computing Integrated logistics support, in systems engineering
Medicine Intermediate Life Support, a level of training in emergency/prehospital medical care
Business and military Inventory Locator Service, LLC, a digital aviation warehouse company ILS (company), a Finnish engineering company
Finance Insurance-Linked Securities (ILS) Israeli new shekel, ISO 4217 currency code
Other uses Inscriptiones Latinae Selectae, a book of Latin inscriptions Ils (musician) Them (2006 film) (French: Ils), a French horror film