The San Diego Union-Tribune is a metropolitan daily newspaper published in San Diego, California, that has run since 1868. Its name derives from what were San Diego's two major daily newspapers, the morning San Diego Union and the San Diego Evening Tribune, which had the same publisher beginning in 1901 and were frequently referred to collectively as the Union-Tribune; they were merged into a single edition under that name in 1992.
The name was changed to U-T San Diego in 2012 but returned to The San Diego Union-Tribune in 2015.
In 2015, the newspaper was acquired by Tribune Publishing. In February 2018, it was announced it would be sold, along with the Los Angeles Times, to Patrick Soon-Shiong's investment firm Nant Capital LLC for $500 million plus $90 million in pension liabilities.