Marthanda Varma Sankaran Valiathan (born 24 May 1934) is an Indian cardiac surgeon.
He was an erstwhile President of the Indian National Science Academy and National Research Professor of the Government of India.He was awarded the Padma Vibushan in 2005 for his contributions to health technology in India.
He was made a Chevalier in the order of Palmes Academiques, an honour bestowed by the French government, in 1999.
He received the Dr.
Samuel P.
Asper International
Award from the Johns Hopkins University Medical School in 2009 for his contributions to international medical education.