Adoor is a municipality in the Pathanamthitta district of Kerala, India. It is the headquarters of the Adoor Taluk and Adoor Revenue Division. Adoor is located 18 km southwest of the district headquarters Pathanamthitta and 85 km north of the state capital Thiruvananthapuram. As per the 2011 Indian Census, Adoor had a population of 29,171.