The Kansas City Monarchs were the longest-running franchise in the history of baseball's Negro leagues. Operating in Kansas City, Missouri, and owned by J. L. Wilkinson, they were charter members of the Negro National League from 1920 to 1930. J. L. Wilkinson was the first white owner at the time of the establishment of the team. In 1930, the Monarchs became the first professional baseball team to use a portable lighting system which was transported from game to game in trucks to play games at night, five years before any MLB team did. The Monarchs won ten league championships before integration, and triumphed in the first Negro League World Series in 1924. The Monarchs had only one season in which they did not have a winning record. The team produced more major league players than any other Negro league franchise. It was disbanded in 1965.

The Negro leagues were United States professional baseball leagues comprising teams of African Americans. The term may be used broadly to include professional black teams outside the leagues and it may be used narrowly for the seven relatively successful leagues beginning in 1920 that are sometimes termed "Negro Major Leagues".