Semmalainathar Temple is a Siva temple in Keezhaiyur in Nagapattinam district in Tamil Nadu (India).[1][2][3]
It is one of the shrines of the Vaippu Sthalams sung by Tamil Saivite Nayanar Sundarar.[2]
The presiding deity is Semmalainathar. The Goddess is known as Vandamarum Poonguzhalal.[1][2]
In inscriptions this place is known as 'Arumozhi Deva Valanattu Alanattu Keezhaiyur'. It is located next to Karunganni in Nagapattinam-Thiruthuraipoondi road.[1]