Peter Vaughan Elsmere McClintock (born 17 October 1940) is a physicist notable for his scientific work on superfluids and stochastic nonlinear dynamics.

at Oxford University in 1966, under Harold Max Rosenberg, with a thesis entitled Experiments on Spin Phonon Interactions in the area of paramagnetic crystals at very low temperatures.

He performed postdoctoral research on superfluid helium at Duke University, Durham, North Carolina.

His research interests span superfluid helium-4, medical physics, and stochastic nonlinear dynamics.

The particular sub-topics are: (a) magnetism including, especially, studies of spin-phonon interactions in rare-earth ethylsulphate crystals; (b) quantum fluids and liquid helium-4 in particular; (c) nonlinear dynamics and fluctuational phenomena including applications to physiology.