Timothy Grant Leighton (born 16 October 1963) is the Professor of Ultrasonics and Underwater Acoustics at the University of Southampton.
He is the Inventor-in-Chief of Sloan Water Technology Ltd., a company founded around his inventions.
He is an Academician of three National Academies.
Trained in Physics and Theoretical Physics, he works across physical, medical, biological, social and ocean sciences, fluid dynamics and engineering, to deliver societal benefit through inventions and discoveries.