Iyengar may be:
- Iyengar, ethnoreligious community
- Aabria Iyengar, American tabletop role-playing game actress
- B. K. S. Iyengar, founder of Iyengar Yoga
- Geeta Iyengar, yoga teacher, daughter of B. K. S. Iyengar
- Shanto Iyengar, American political scientist
- Sundaraja Sitharama Iyengar, US-based computer scientist