Ayn

Ayn might refer to:

• Ayn, Savoie, a commune in the Savoie department in France
• Ayn, Somalia, a province in northern Somalia
• Ayn Rand, Russian writer
• Objectivism (Ayn Rand), a gradualist philosophy
• Wadi al Ayn, a wadi in Rub' al Khali, Oman