The Battle of Quilon (or Battle of Kollam) was fought on the 15 January 1809 at Cantonment Maidan in Quilon, an important port city and business hub on the southwest coast of India. The conflict involved troops of the Indian kingdom of Travancore, led by the then Dewan (prime minister) of Travancore, Velu Thampi Dalawa, and a detachment of the British East India Company under Colonel Chalmers. The battle lasted for only six hours and is closely associated with the social and political history of Kerala.