This is to announce that according to the authentication letter numbered 3/18/548913 dated 15-1-2013 issued by the Iranian Ministry of Science, Research and Technology , the Iranian Journal of Numerical Analysis and Optimization (IJNAO) is ranked as "Scientific Research" Journal. Moreover the IJNAO is indexed by the well known databases such as ISC (Islamic World Science Citation Center), Zentralblatt, SID, etc.