Sir Robert Yewdall Jennings (19 October 1913 – 4 August 2004) was Whewell Professor of International Law at Cambridge University from 1955 to 1982 and a Judge of the International Court of Justice from 1982. He also served as the President of the ICJ between 1991 and 1994 and resigned from the Court on July 10, 1995.
He was born in Yorkshire, where his father worked at a small manufacturing firm and his mother was a mill weaver.
Educated at the local village school, and later at Belle Vue Grammar School in Bradford, he went on to study history at Downing College, Cambridge. After he gained an upper first class degree, the award of a Squire Law scholarship and some assistance from his local authority provided the financial support that enabled him to proceed to study Law. Again, Jennings excelled, gaining first class honours in both parts of the Cambridge Law Tripos and in the postgraduate LLB degree, and being awarded the Whewell and Cassell scholarships. He later got his LL.B from the same institution and then won the Joseph Hodges Choate Memorial Fellowship to Harvard University.
After Harvard, Jennings worked at an assistant lectureship at the London School of Economics. From 1939 on, he was a Fellow of Jesus College, Cambridge, and was awarded the Hudson Medal of the American Society of International Law. The University of Leicester named a chair after him; Malcolm Shaw is the current Sir Robert Jennings Professor of International Law. In 1955 he succeeded Sir Hersch Lauterpacht as Whewell Professor of International Law, the post which he held until 1982.