John Duncan Martin Derrett (30 August 1922 – 21 October 2012) was Professor of Oriental Laws in the University of London, from 1965 to 1982, and afterwards Emeritus Professor.
W & M Duncan and Company, best known as "Duncan's of Edinburgh", was a Scottish confectioner. The company's most popular and enduring product was the Walnut Whip, which is now manufactured by Nestlé Rowntree's.