Vint Cerf and Robert Kahn, we are all forever indebted. 

Via Techworld.com

"Cerf and Kahn developed the notion of an Internet Protocol (IP) while working on a Defense Advanced Research Projects Agency (DARPA) project in 1973. The next year they published a paper on the Transmission Control Protocol (TCP), which could be used to route messages that were broken up into packets of data."

From Turing Award winners page, past and present.

"ACM's most prestigious technical award is accompanied by a prize of $100,000. It is given to an individual selected for contributions of a technical nature made to the computing community. The contributions should be of lasting and major technical importance to the computer field. Financial support of the Turing Award is provided by the Intel Corporation."