The 1918 Illinois Fighting Illini football team was an American football team that represented the University of Illinois during the 1918 Big Ten Conference football season. In their sixth season under head coach Robert Zuppke, the Illini compiled a 5–2 record and tied for the Big Ten Conference championship.

The 1918 Big Ten Conference football season was the 23rd season of college football played by the member schools of the Big Ten Conference and was a part of the 1918 college football season.