The cleidocranial dysostosis is relatively rare congenital and familial disorder with autosomal dominant inheritance. After the first report of a case of this was that of Cutter in 1870, which was quoted from Soule, A., in 1946, Marie and Sainton supplied the name of the Cleidocranial dysostosis with the report of 2 cases of this in 1897. Since that time approximately 350 cases have been described in the literature. This condition is characterized by deficient formation of the clavicle, delayed and imperfect ossification of the cranium and less often involvement of other bones, We experienced 2 cases of this and reported them in this paper with a brief review of the literatures.