Arattupuzha Velayudha Panicker, also known as Kallisseril Velayudha Chekavar (7 January 1825 – 3 January 1874) was a 19th-century social reformer and warrior, known for his fight against many social evils prevalent in the state of Kerala. He was born into an affluent Ezhava family known as Kallisseril, in the small independent province called Mangalam, near Haripad in Alappuzha district.