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Hettipathirannehelage Dasarathasiri Gunawardhana is a Senior Professor of Chemistry at University of Colombo.

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He received his primary education at Withanamulla Buddhist Mixed School Minuwangoda and entered Nalanda College Colombo for secondary education. Later he graduated with a BSc (Special) Degree from University of Ceylon, Colombo and gained a PhD for Analytical Chemistry from University of Salford in United Kingdom.

Started his academic teaching career as a Temporary Assistant Lecturer at University of Ceylon, Colombo in 1970 and was appointed as a Professor of Chemistry (Inorganic / Analytical) in 1990. He is a Fellow of the Institute of Chemistry, Ceylon^{[citation needed]} and Fellow of the National Academy of Sciences, Sri Lanka.^[1] He was also the Head of the Chemistry Department of University of Colombo from 1988 to 1995.^{[citation needed]} He has also served as president of the Sri Lanka Association for the Advancement of Science in 2008.^[2]

• "Lecture". Daily News. 10 March 2011. Archived from the original on 15 March 2011. Retrieved 23 April 2011.
• "Department of Chemistry". University of Colombo. September 2007. Archived from the original on 5 April 2011. Retrieved 23 April 2011.