AIU
AIU is an abbreviation for:
- Alliance Israélite Universal , international cultural Jewish organization
- American Intercontinental University , a commercial college
- Association Internationale des Universités , international association of universities since 1950, based in Paris
- Astrophysical Institute and University Observatory of the Friedrich Schiller University Jena
- Athletics Integrity Unit , independent integrity commission of the World Athletics Association (formerly IAAF)
