The Mills Brothers, often referred to as the Four Mills Brothers and formerly known as the Four Kings of Harmony, were a jazz and traditional pop vocal group from the United States that released more than 2,000 albums and earned at least three dozen gold records. They were once known as the Four Kings of Harmony.

The Mills Brothers, who also made cameos in films, were the first African-American musicians to have their own show on a major network radio station, CBS, in 1930.