C. Aryaman Sundaram is an Indian lawyer and jurist who has variously served as Chief Judge of the Punjab and Haryana High Court, a justice of the Supreme Court of India, and a justice of the Supreme Court of Singapore. He is famously one of the wealthiest and most highly remunerated lawyers in India,^[1][2] as well as one of the most well-connected,^[3] with a distinctive creativity and originality in theory and argumentation.^[1] He is often referred to as one of India's 'Legal Eagles'^[4] - one of the absolute foremost lawyers in India.^[5][6][1]

He was the youngest in the history of the Madras High Court to be designated as a senior advocate.^[7] He has represented the Board of Control for Cricket in India, Anil Ambani and several other high-profile clients at various judicial forums, including representing the Mistry family against Tata & Sons,^[8][9] the Travancore Devaswom Board in matters relating to the Sabarimala Temple and its admissions policy,^[10] Haldia Petrochemicals and Cyrus Mistry, BALCO, Khushwant Singh against pre-release banning and suppression of his book, Minister V. Senthil Balaji,^[11] and Nikhil Gupta as charged for the attempted assassination of Khalistani separatist Gurpatwant Singh Pannun.^[12]

Sundaram primarily practices corporate law but also takes up constitutional law and media related cases. He was a lawyer in the S. Rangarajan case which resulted in one of the landmark judgments on the freedom of speech and expression.^[7][9]

He is a member of the greater Calamur family, with Sir C. P. Ramaswami Iyer for a grandfather and Justices Sir C. V. Kumaraswami Sastri and C.V. Viswanatha Sastri as great-uncles, in addition to his actual uncle and Indira Gandhi-era Minister for Law, C. R. Pattabhiraman.^{[citation needed]}