Karkidaka Masathil Theepeta Thampuran (died August 1828) (regnal name: Kerala Varma III), popularly known as Virulam Thampuran, was an Indian monarch who ruled the Kingdom of Cochin from 1809 to 1828.
The early part of his reign witnessed the rebellion of the Paliath Achan or Govindan Menon against British interference.
Govindan Menon was eventually captured and exiled to Madras and later, Bombay.
Mattancherry, Thrippunithura and Alleppey were garrisoned with British troops to prevent further insurrections and remained till October 1809.
He died in August 1828 and was succeeded to the throne by his nephew who assumed the title Rama Varma XI.