M. Patanjali SastriB.A., B.L. (born January 4, 1889), also known as M.P.Sastri or as Mandakalathur Patanjali Sastri was the Second Chief Justice of India, serving in the post from 7 November 1951 to 3 January 1954.
He was the son of Pandit Krishna Sastri, Senior Sanskrit Pandit of Pachaiyappa's College, Madras. He graduated in B.A., B.L. from Madras University before taking to advocacy as a profession. He practised as a lawyer in the High Court of Madras for sometime before being elevated to the Bench on March 15, 1939. On December 6, 1947, he was made a judge of the Supreme Court and served as a judge and later Chief Justice of India till 3 January 1954.