Kalaiyar Kovil is a place which is situated in Sivaganga District, Tamil Nadu, India which was ruled by the Maruthu Pandiyar. There is a very large Shiva temple. Kalaiyar Kovil derived its name from the Kaleeswarar temple of the place. Kalaiyar is a corruption of the word Kaleeswaran. During the Sangam period, this place was known as Kaanapair as is seen from the 21st verse in the purananooru sung by Iyur moolakizhar, a poet of the Sangam period. In the 9th Century A.D. Saint Sundara moorthy nayanar described the presiding deity in his devotional songs as Kaalai. Since then the deity was known as Kalaiyar, with the Tamil sufix yar added to it denoting respect. The temple came to be known as Kalaiyar Kovil and this was later adapted to the place also.