IOL may mean:

• Iol, an ancient city in Algeria, now Cherchell
• Independent Online (South Africa), news website
• Institute of Linguists, UK, now Chartered Institute of Linguists
• International Linguistics Olympiad, an International Science Olympiad
• Intraocular lens, eye implant
• Ireland On-Line
• The University of New Hampshire InterOperability Laboratory (UNH-IOL), for networking testing

Cherchell (older Cherchel, ) is a seaport town in the Province of Tipaza, Algeria, 55 miles west of Algiers. It is the district seat of Cherchell District. In 1998 it had a population of 24,400.