Pathanamthitta

thumb|200px|Pathanamthitta Town thumb|200px| Gavi, Kerala|Gavi, a major tourist destination in Pathanamthitta. thumb|200px|Perunthenaruvi Falls, Pathanamthitta

Achankovil is a long west flowing river in Kerala, India. It flows through the districts of Kollam, Pathanamthitta and Alappuzha. The river drains vast tract of fertile plains of Upper Kuttanad in the Alappuzha and Pathanamthitta districts. It also sustains numerous urban settlements along its course such as Konni, Pathanamthitta, Pandalam and Mavelikkara.