Mettur is a state legislative assembly constituency in Salem district in the Indian state of Tamil Nadu.

[2] Its State Assembly Constituency number is 85.

It comprises a portion of Mettur taluk and is a part of the wider Dharmapuri constituency for national elections to the Parliament of India.

[3] It is one of the 234 State Legislative Assembly Constituencies in Tamil Nadu, in India.

Elections and winners in the constituency are listed below.