Dudley Brian Spalding (born 9 January 1923) was Professor of Heat Transfer and Head of the Computational Fluid Dynamics Unit at Imperial College, London. He is one of the founders of, and influential persons in, the development of computational fluid dynamics (CFD).In 1983, he became a Fellow of the Royal Society.Professor Spalding was born at New Malden, Surrey, England. He received his BA degree in Engineering Science from Oxford University in 1944 and PhD from Cambridge University in 1952.

 He is the founder of the company Concentration Heat And Momentum Limited, (CHAM) specialising in computational fluid dynamics and heat transfer processes.CHAM's major product is the widely used PHOENICS CFD code. Professor Spalding himself is the main creator of, and contributor to, PHOENICS.He received Benjamin Franklin Medal in Mechanical Engineering of The Franklin Institute, 2010.