INAS, InAs of Inas may refer to:

• Inas X, an American musician from New York City, New York, United States

• Indian Naval Air Squadron, a flying unit of the Indian Naval Air Arm

• Indian Naval Armament Service, part of the Indian Engineering Services exam conducted by UPSC.

• Indium arsenide, a semiconductor

• Institute of Native American Studies, at the University of Georgia, Athens, Georgia, United States

• International Near-Earth Asteroid Survey

• International Sports Federation for Persons with Intellectual Disability

• École Nationale des Beaux Arts (Senegal), formerly Institut National des Arts du Sénégal, or INAS, in Dakar, Senegal