The Chicago Sun-Times is an American daily newspaper published in Chicago, Illinois. It is owned by the Sun-Times Media Group, which filed for bankruptcy protection on March 31, 2009.

The Chicago Sun-Times is the oldest continuously published daily newspaper in the city. It began in 1844 as the Chicago Evening Journal (which was the first newspaper to publish the rumor, now believed false, that a cow owned by Catherine O'Leary was responsible for the Chicago fire). The Evening Journal, whose West Side building at 17-19 S. Canal was undamaged, gave the Chicago Tribune a temporary home until it could rebuild. In 1929, the newspaper was relaunched as the Chicago Daily Illustrated Times.

The modern paper grew out of the 1948 merger of the Chicago Sun, founded in 1941 by Marshall Field III, and the Chicago Daily Times. Before Rupert Murdoch, the newspaper was for a time owned by Field Enterprises, controlled by the Marshall Field family, who also owned WFLD channel 32 since its inception in 1966, and the afternoon paper Chicago Daily News. When the Daily News ended its run in 1978, much of its staff, including Pulitzer Prize-winning columnist Mike Royko, were moved to the Sun-Times. During the Field period, the newspaper had a populist, progressive character that leaned Democratic but was independent of the city's Democratic establishment. Although the graphic style was urban tabloid, the paper was well-regarded for journalistic quality and did not rely on sensational front-page stories. It typically ran articles from the Washington Post/Los Angeles Times wire service.