Iyengar may be:
- Iyengar, an Indian caste
- Aabria Iyengar, American tabletop role-playing game actress
- B. K. S. Iyengar, founder of Iyengar Yoga
- Geeta Iyengar, daughter of Iyengar, "the world's leading female yoga teacher"
- Shanto Iyengar, American political scientist
- Sundaraja Sitharama Iyengar, a US-based computer scientist
