Universities as science production centers are institutions that bring diverse information together. It is noteworthy that no longer these institutions have more international and heterogeneous structures. Qualified foreign academicians with the educational culture of a different country get universities stronger with these differences and knowledge, and improve the universities’ academic performance. Considering this idea in this research the effect of the number of foreign academicians to the academic performance of universities is investigated. For this purpose, the effect and correlation between performance rates of 130 universities of Turkey and the number of the foreign academicians, which is evaluated by University Ranking by Academic Performance Research Laboratory (URAP), have been revealed with correlation and regression analysis. As a consequence, a positive and weak relationship was determined between the number of foreign academicians and performance. Also the number of the foreign instructors affects the performance of the universities positively.