Chidambaram is a Lok Sabha (Parliament of India) constituency in Tamil Nadu.

Its Tamil Nadu Parliamentary Constituency number is 27 of 39.

The seat is reserved for scheduled castes.

It spread on district of Ariyalur and Cuddalore.

Chidambaram Lok Sabha constituency is composed of the following assembly segments:[2] Chidambaram Lok Sabha constituency was composed of the following assembly segments:[2]