Avar or Avars may refer to:
- Avar people (Caucasus), a modern North Caucasian-speaking people in the Republic of Dagestan, Russia
- Avar language, the North Caucasian language of the Caucasian Avars
- Avar Khanate, a country of the Caucasian Avars
- Eurasian Avars, a medieval Turkic-speaking nomadic people who conquered parts of Southeast and Central Europe in the Middle Ages
- Avar Khaganate, a country of the Eurasian Avars
- Uar
- Avar, Iran (disambiguation), places in Iran
- Avar (animation variable) in computer-generated imagery or computer animation
- The race of forest-dwelling people in Sara Douglass' fantasy series Wayfarer Redemption
- A member of a group of Elves, the Avari (Middle-earth), in J.R.R. Tolkien's fantasy universe
- Avar in statistics is asymptotic variance
- Trade name of a sulfacetamide/sulfur cream
AVAR may refer to
- Allan variance, a statistical measure of frequency stability
- Average value at risk, a coherent risk measure