Arthur Taylor Winfree (May 15, 1942 – November 5, 2002) was a theoretical biologist at the University of Arizona.

[2] Winfree was noted for his work on the mathematical modeling of biological phenomena (see Complexity and Singularity (system theory)): from cardiac arrhythmia and circadian rhythms to the self-organization of slime mold colonies and the Belousov–Zhabotinsky reaction.

Winfree was a MacArthur Fellow from 1984 to 1989, he won the Einthoven Prize for his work on ventricular fibrillation, and shared the 2000 Norbert Wiener Prize in Applied Mathematics[3] with Alexandre Chorin.

He was the father of Erik Winfree, another MacArthur Fellow and currently a professor at the California Institute of Technology, and Rachael Winfree, currently a professor in the Department of Ecology, Evolution and Natural Resources at Rutgers University.

The Arthur T. Winfree Prize was established by the Society for Mathematical Biology in his honor.