13.06.1947
foundation as Association Sportive Orléansvilloise
__.__.1962
renaming in Asnam Sportive Olympique
__.__.1978
renaming in ASTO El-Asnam
__.__.1979
renaming in DNC El-Asnam
31.12.1981
renaming in Chlef Sportif Olympique
__.__.1989
renaming in Association Sportive Olympique de Chlef