Senthamangalam is a state assembly constituency in Tamil Nadu, India, that was formed after constituency delimitations in 1957. Its State Assembly Constituency number is 93. The seat is reserved for candidates from the Scheduled Tribes and comprises portions of Rasipuram and Namakkal taluks. It is a part of the wider Namakkal 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.