This List of Negro league baseball champions includes champions of black baseball prior to the organization of any traditional Negro league and goes through to the collapse of segregated baseball after Jackie Robinson broke the baseball color line in 1946. Champions include self-declared, regional and (later) league champions, but is limited to top-tier teams and major Negro leagues. The champions listed after 1948 through the 1950s are listed for posterity, but the quality of play had deteriorated so far as to only incidentally be covered by contemporary media or historians.