Nithya Amirtham is a prominent vegetarian restaurant and sweet shop located in the temple city of Kanchipuram, Tamil Nadu, India. It is part of a reputed South Indian chain recognized for its authentic cuisine, extensive sweet offerings, and emphasis on traditional flavors and hospitality.

The Kanchipuram branch specializes in classic South Indian dishes, sweets, and snacks. Popular menu items include dosas, idlis, pongal, thalis, and signature desserts such as Mysore Pak, Badam Halwa, and Kaju Katli. The restaurant also offers Indo-Chinese dishes, North Indian curries, and a wide range of beverages like traditional filter coffee and lassi. Its sweets and savory items are also available for takeaway and online ordering.