Born 17 November 1926 in Colombo, Ceylon, he was educated at the Royal College Colombo, where he was a senior prefect, editor of the Royal College Magazine, Chairman Senior Literary Association and won many class and school prizes as well as the Governor's Scholarship, Principal's Prize and the Empire Essay Prize for 1943 awarded by the Royal Empire Society.
Beginning his law practice in Colombo that went on until 1965, he was appointed Commissioner of Assize, holding the post until 1967 when he was called to the bench as a judge of the Supreme Court of Ceylon. He retired from the Supreme Court in 1972 and moved to Australia where he assumed duties as Sir Hayden Starke Professor of Law, at Monash University in Victoria.
The Law of Contracts: A Comparative Study of the Roman-Dutch, English and Customary Laws of Contract in Ceylon (2 Volumes, 1965), H.W. Cave & Co., Colombo 1967. Reprinted 1999, 2013
The Law in Crisis: Bridges of Understanding, Capemoss, London 1975. Reprinted by Sarvodaya, 2001.
Equality and Freedom: Some Third World Perspectives, Hansa Publishers, Colombo 1976. Reprinted by Sarvodaya, 1999.
Human Rights in Japan, Lantana, Melbourne, 1979.
Apartheid: The Closing Phases? Lantana, Melbourne, 1980.
An Invitation to the Law, Butterworths, Melbourne, 1980. Reprinted Sarvodaya 2007, Stamford Lake
The Slumbering Sentinels: Law and Human Rights in the Wake of Technology, Penguin, Melbourne, 1983.
Law: The Threatened Peripheries, Lake House, Colombo, 1984.
Nuclear Weapons and Scientific Responsibility, Longwood Academic, New Hampshire, 1987 (also in Japanese, published by Chuo University Press, Tokyo). Reprinted Sarvodaya, 1999.
Islamic Jurisprudence: Some International Perspectives, Macmillans, London and St. Martin's Press, New York, 1988. Reprinted Sarvodaya, 2002.
Human Rights and Scientific and Technological Development, United Nations University Press, 1990 - work edited for and commissioned by the United Nations Human Rights Commission and the United Nations University to commemorate the 40th Anniversary of the Universal Declaration of Human Rights. Nauru: Environmental Damage under International Trusteeship, Oxford University Press, 1992.
Impact of Technology on Human Rights: Global Case Studies, United Nations University Press, 1993 - work edited for and commissioned by the United Nations Human Rights Commission and the United Nations University.
Justice Without Frontiers. Vol I: Furthering Human Rights, Kluwer Law International, 1997.
The Lord's Prayer: Bridge to a Better World, Liguori Publications, 1998 (also in Spanish, German and Japanese). Reprinted Sarvodaya, 1998.
Justice Without Frontiers, Vol II: Protecting Human Rights in the Age of Technology, Kluwer Law International, 1998.
The World Court, Its Conception, Constitution and Contribution, Sarvodaya, 2002.
Universalizing International Law, Martinus Nijhoff, 2004.
Sustainable Justice: Reconciling Economic, Social and Environmental Law, With Marie-Claire C. Segger. Martinus Nijhoff, 2005.
Armageddon or Brave New World? Reflections On The Hostilities in Iraq, Sarvodaya, 2005.
A Call for National Reawakening, Stamford Lake, 2005.
Islamic Influences on International Philosophy and Law, Sarvodaya 2006.
Xenotransplantation: The Ethical and Legal Concerns, Sarvodaya Vishva Lekha, 2007.
Tread Lightly on the Earth: Religion, the Environment and the Human Future, Stamford Lake, 2009.
Towards One World: The Memoirs of Judge C. G. Weeramantry, Volume I: The Sri Lankan Years, Weeramantry International Centre for Peace Education and Research, 2010.
Towards One World: The Memoirs of Judge C. G. Weeramantry, Volume II: The Australian Years, Weeramantry International Centre for Peace Education and Research, 2012.
Our Lady: A Fount of Inspiration, Weeramantry International Centre for Peace Education and Research, 2013
Towards One World: The Memoirs of Judge C. G. Weeramantry, Volume III: The International Court and Thereafter, Stamford Lake Publication, 2014.
12"Curriculum Vitae". Weeramantry International Centre For Peace Education and Research. Archived from the original on 27 July 2007. Retrieved 10 March 2007.
