(John) Trevor Stuart FRS (29 January 1929 to 17 December 2023)[1] was a mathematician and senior research investigator at Imperial College London[3] working in theoretical fluid mechanics, hydrodynamic stability of fluid flows and nonlinear partial differential equations.

[1] He continued his study at Imperial College and in 1953 was awarded Ph.D. on the basis of Stability of Viscous Motion for Finite Disturbances.

He was appointed professor of theoretical fluid mechanics in 1966 and was head of the Department of Mathematics from 1974 to 1979 and 1983 to 1986.

[4] Stuart is known for his work on nonlinear waves in the onset of turbulence in fluids.

He also extended the work of Lord Rayleigh with research into steady streaming in unsteady viscous flows at high Reynolds numbers.