This study examined the relationship between personality and social media usage among university students. . The sample of this study selected using purposive random sampling technique consists of 480 (258 males and 222 females) university students. Measure of The Facebook Intensity Scale constructed by Ellison, Steinfield, & Lampe., 2007, and the Big Five Inventory by Benet-Martinez & John, 1998 to respondent. Data collected were analyzed using t-test and correlation. The results indicate the students with high level of agreeableness, extraversion and openness shows more usage of social media.