Dr. James Cooley (born 1926) is an American mathematician. His most significant contribution to the world of mathematics and digital signal processing is the Fast Fourier transform, which he co-developed with John Tukey (see Cooley-Tukey FFT algorithm) while working for the research division of IBM in 1965. He was a member of the Digital Signal Processing Commitee of the IEEE, and was later awarded a fellowship of IEEE for his work on FFT.