1940 Delaware Fightin' Blue Hens football team

The 1940 Delaware Fightin' Blue Hens football team was an American football team that represented the University of Delaware in the 1940 college football season. In its first season under head coach William D. Murray, the team compiled a 5–3 record and outscored opponents by a total of 87 to 54. The team's victory on October 26, 1940, started a 22-game undefeated streak that was not broken until five years later on October 27, 1945.

Delaware was ranked at No. 375 (out of 697 college football teams) in the final rankings under the Litkenhous Difference by Score system for 1940.