Thiruvaikunda Vinnagaram or Vaikunta Nathan Perumal Temple is dedicated to Hindu god Vishnu located in Tirunangur, a village in the outskirts of Sirkazhi in the South Indian state of Tamil Nadu. Constructed in the Dravidian style of architecture, the temple is glorified in the Nalayira Divya Prabandham, the early medieval Tamil canon of the Alvar saints from the 6th–9th centuries CE. It is one of the 108 Divya Desams dedicated to Vishnu, who is worshipped as Vaikuntanathan and his consort Lakshmi as Vaikuntavalli.

Sirkazhi, also spelled as Sirkali and Siyali, is a major municipal town in Mayiladuthurai district in Tamil Nadu, India. It is located 13 km (8.1 mi) from the coast of the Bay of Bengal, and 250 km (160 mi) from the state capital Chennai. Sirkazhi was a part of Thanjavur district until 1991 and has later been part of Nagapattinam district. The town covers an area of 13.21 km2 (5.10 sq mi) and in 2011 had a population of 34,927. It is administered by a second grade municipality. Sirkazhi is part of the Cauvery delta region and agriculture is the major occupation. Roads are the main means of transportation; the town has 51.47 km (31.98 mi) of district roads, including a national highway.