Richard M. Sillitto (1923 – 19 April 2005) was an optical physicist who wrote a useful text on quantum mechanics. He was a Fellow of the Royal Society of Edinburgh and Fellow of the Institute of Physics as well as a past president of the Scottish branch of the Institute of Physics. Sillitto was Reader and Reader Emeritus in the Physics department of the University of Edinburgh.
The proposed book "Geometrical and Physical Optics, R M Sillitto, Longman Higher Education, " was never completed.