In this article, The aim was to study correlation between careerpersonality types and adolescents gender considering birth order.
The Design of this research was correlational and causal- comparative Three handred eigty male and female student adolescents from Tehran schools were tested by Holland Interest Inventory, Data's was analyzed using Friedman, Cruskall vallis and U man wittny.Significant the results indicated that there was a correlation between careerpersonality types and birth order. Of their Position among siblings in the family hadan influence on their interests and choices. Also there was a significant different between male and female adolescents in career-personality types.