Robert James Mair, Baron Mair, CBE, FRS, FICE, FREng (born 20 April 1950) is a geotechnical engineer and Emeritus Sir Kirby Laing Professor of Civil Engineering and director of research at the University of Cambridge. He is Head of the Cambridge Centre for Smart Infrastructure and Construction (CSIC). He was Master of Jesus College, Cambridge, from 2001 to 2011 and a fellow of St John's College, Cambridge, from 1998 to 2001. In 2014 he was elected a vice president of the Institution of Civil Engineers and on 1 November 2017 became the Institution's president for 2017–18, its 200th anniversary year. He was appointed an independent crossbencher in the House of Lords in 2015 and is currently a member of its Select Committee on Science and Technology.