Sugathan, (23 December 1901 – 14 February 1970), popularly known as Sugathansir, was an Indian Communist leader and an early trade unionist of Kerala.
He was elected to the Travancore-Cochin Assembly in 1952 (Alleppey) & 1954 from Maraikkulam (Mararikulam), followed by first Kerala Legislative Assembly elections in 1957 from Karthigapally (Karthikappally) in present Alappuzha district, and second assembly also from Karthikappally as a CPI member,.