Jeremy Daniel Quastel FRS, FRSC is a Canadian mathematician specializing in probability theory, stochastic processes, partial differential equations.

Quastel earned his PhD at Courant Institute of Mathematical Sciences at New York University in 1990; the advisory was S. R. Srinivasa Varadhan.

He was a postdoctoral student at the Mathematical Sciences Research Institute in Berkeley, then a faculty member at University of California, Davis for the next six years;[2] returned to Canada in 1998.

[3] Jeremy Quastel is recognized as one of the top probabilists in the world in the fields of hydrodynamic theory, stochastic partial differential equations, and integrable probability.

[3] Together with Konstantin Matetski and Daniel Remenik, Quastel gave an exact formulation of the KPZ fixed point in terms of its transition probabilities.