RedEye was a publication put out by the Chicago Tribune geared toward 18 to 34-year-olds. It was published every weekday since its inception in 2002 until February 3, 2017. Publication was reduced to weekly starting February 9, 2017. Daily circulation was 250,000 as of December 2, 2009. The final issue was published March 19, 2020, a coronavirus edition.

The Chicago Tribune is an American daily newspaper based in Chicago, Illinois, owned by Tribune Publishing. Founded in 1847, and formerly self-styled as the "World's Greatest Newspaper", it remains the most-read daily newspaper in the Chicago metropolitan area and the Great Lakes region. In 2022, it had the seventh-highest circulation of any newspaper in the United States.