Vandavasi is a state legislative assembly constituency in Tiruvannamalai district of the Indian state of Tamil Nadu. Its State Assembly Constituency number is 69. The seat is reserved for candidates from the Scheduled Castes and comprises a portion of Vandavasi taluk. It is a part of Arani Lok Sabha constituency for national elections to the Parliament of India. It is one of the 234 State Legislative Assembly Constituencies in Tamil Nadu, in India.