Masilamaniswara Temple is a Hindu temple dedicated to Hindu god Shiva, located in the village of Thiruvaduthurai, located 22 km from the South Indian town, Kumbakonam and 14 km from Mayiladuthurai, Tamil Nadu.

The temple is referred to in the verses of Tevaram, the 7th century Tamil Saiva canon by Tirugnana Sambandar, Appar and Sundarar.

An inscription in the temple indicates record of grants to pipers, land endowments, flower gardens, carriers of sacred water during his third regnal year.

Another inscription from his 38th regnal year recorded as 143 of 1925 indicates gift of 500 kalanjus of gold for the construction of the kudapadai upwards.

The images of the presiding deity, Masilamaniswarar, in the form of Shiva lingam occupies the main sanctum facing east.

[5] The temple is revered in the verses of Tevaram, the 7th century Saivite canonical work by the three saint poets, namely, Appar, Sambandar and Sundarar.

[6][5] [6] translating to Sambandar is believed to obtained gold coins from the presiding deity for performing Yagna by his father.

Like other Shiva temples of Tamil Nadu, the priests belong to the Shaiva community, a Brahmin sub-caste.

The temple rituals are performed six times a day; Ushathkalam at 6:30 a.m., Kalasanthi at 8:00 a.m., Uchikalam at 12:00 a.m., Sayarakshai at 5:00 p.m., and Ardha Jamam at 8:00 p.m. Each ritual comprises four steps: abhisheka (sacred bath), alangaram (decoration), naivethanam (food offering) and deepa aradanai (waving of lamps) for both Masilamaniswarar and Kodiyidai Nayagi.