Daniel Wyler Stroock (born March 20, 1940) is an American mathematician, a probabilist.

He is regarded and revered as one of the fundamental contributors to Malliavin calculus with Shigeo Kusuoka and the theory of diffusion processes with S. R. Srinivasa Varadhan with an orientation towards the refinement and further development of Itô’s stochastic calculus.

He is known for his work with S. R. S. Varadhan on diffusion processes, for which he received the Leroy P. Steele Prize for Seminal Contribution to Research in 1996.

[4] Mathematics is one, and possibly the only, human endeavor for which there is a widely, if not universally, recognized criterion with which to determine truth.

For this reason, mathematicians can avoid some of the interminable disputes which plague other fields.