The 1956 Wyoming Cowboys football team represented the University of Wyoming in the Skyline Conference during the 1956 NCAA University Division football season. In their fourth season under head coach Phil Dickens, the Cowboys compiled a perfect 10–0 record (7–0 against Skyline opponents), won the Skyline Conference championship, and outscored all opponents by a total of 252 to 112. The Cowboys were ranked No. 19 in the AP Poll issued on November 19, 1956, but dropped out in the final poll.