Leslie Gordon Jaeger CM FCAE FEIC FCSCE FRSE (28 January 1926–20 August 2013) was a distinguished British and Canadian academic and engineer.
He graduated from the University of Cambridge (Gonville & Caius College), and then served for two years as a lieutenant in the Royal Navy.
He served the Canadian Society for Civil Engineering (CSCE) in a number of capacities, and was its President from 1992-93.
Jaeger authored or co-authored nine books and published extensively in the technical literature.
Subsequently he was elected Fellow of the CSCE, the EIC and the Canadian Academy of Engineering.