Kailasanathar Temple in Srivaikuntam, a village in Thoothukudi district in the South Indian state of Tamil Nadu, is dedicated to the Hindu god Shiva.

The temple is maintained and administered by the Hindu Religious and Endowment Board of the Government of Tamil Nadu.

The lingam, the aniconic form of Shiva in the temple, is believed to an aspect of Shani, one of the planetary deities.

[3] The temple also houses the images of Vinayaka, Subramanya, Veerabhadra, Rishabhandika, and Nataraja on the walls.

The west-facing shrine adjacent to the flagstaff has a hall with yali pillars, where Nataraja is housed.

Veerappa Nayaka (1609-23 AD), a ruler of Madurai Nayak dynasty built the Yagasala, dwajasthamba (flagstaff) and Sandana Sababathy hall.

[1] In modern times, the temple is maintained and administered by the Hindu Religious and Endowment Board of the Government of Tamil Nadu.

The rituals are performed four times a day: Kalasanthi at 8:30 a.m., Uchikalam at 11:30 p.m., Sayarakshai at 6:00 p.m., and Aravanai Pooja between 8:00  - 8:00 p.m. Each ritual has three steps: alangaram (decoration), naivethanam (food offering) and deepa aradanai (waving of lamps) for both Kailasanathar and Sivakami.

During the last step of worship, nagaswaram (pipe instrument) and tavil (percussion instrument) are played, religious instructions in the Vedas (sacred text) are recited by priests, and worshippers prostrate themselves in front of the temple mast.