Nageswaraswamy Temple, Kumbakonam, Hindu temple in Kumbakonam, India.

Nageswaraswamy Temple is a Shiva temple in Kumbakonam whose five-tiered east-facing rajagopuram is entered past a Nandavanam and the Simhamukha Theertha well. Inside, the sixteen-pillared mandapa stands to the left and the Nataraja hall to the right; the hall is built as a chariot with stone wheels, twelve zodiac spokes, two horses and four elephants. The sanctum is shaped like a chariot, and the Devi shrine faces south.

This temple was founded in 907 CE by King Aditya I and reflects architectural development during the Chola dynasty in Tamil Nadu. Its construction marked the start of an important period of temple building across the region.

The temple is the 27th Shiva shrine on the southern bank of the Kaveri in Chola Nadu praised in the Tevaram, and the saint Appar calls it Kudanthai Keezhkottam. Legend holds that the serpent king Vasuki and other snakes worshipped here during the first quarter of a Maha Shivaratri night, then at Thirunageswaram, Thiruppamburam and Nagoor. The processional flagstaff, damaged at its top, was restored and consecrated on 29 January 2016.

The east rajagopuram has five tiers; inside, the Nandavanam and Simhamukha Theertha well lie to the left, and the Periyanayagi shrine faces south on the right. Six daily rituals run from 5:30 a.m. to 10 p.m., with Ushathkalam at 6:30 a.m. and Kalasanthi at 8 a.m. The flagstaff, damaged at the top, was repaired and reinstalled on 29 January 2016.

On the first three days of the Tamil month of Chittirai (April–May), sunlight falls directly on the base of the presiding deity in the sanctum, which is why the temple is also called Surya Kottam. The sanctum itself is built in the form of a chariot, like that of the Sarangapani Temple.