Kanagaratnam Thavalingam is a Sri Lankan geographer and retired as Surveyor General of Sri Lanka.(2013-2014)
Thavalingam is from Navatkuly in northern Sri Lanka.
He was educated at the Jaffna Hindu College.
He is a fellow of the Surveyors Institute (of Sri Lanka) and a member of the institute's council (2013).
Presently working as Chairman, Delimitation Commission, appointed by HE the President of Sri Lanka.
Thavalingam was Senior Deputy Surveyor General(2001-2005) and Additional Surveyor General(2005-2013).
Worked as Director, Institute of Surveying and Mapping, Diyatalawa (1996-1998; 2002-2004).
Chairman, Land Survey Council (2013-2014) He became the 45th Surveyor General in 2013.