The Ballet Azul (Blue Ballet) is a term coined in Colombia in the 1950s to describe the Millonarios football team, during its successful period from 1949–1964, because the blue color of their uniform, the large number of titles who had won the team, and the quality of its game. The term was first used by the sportscaster Carlos Arturo Rueda.
Later in the 1960s, in Chile, Ecuador and Costa Rica, was used the same term to refer to Universidad de Chile during its successful period from 1959–1969, Emelec, and C.S. Cartaginés respectively.