Raphael Finkel (born 1951) is an American computer scientist and a retired[1] professor at the University of Kentucky.[2] He compiled the first version of the Jargon File.[3] He is the author of An Operating Systems Vade Mecum,[4] a textbook on operating systems, and Advanced Programming Language Design,[5] an introductory book on programming paradigms. Finkel and J.L. Bentley created the data structure called the quadtree.