This study aimed at investigating the relationships between thinking styles and sensation seeking, thinking styles and academic achievement, and sensation seeking and academic achievement. The target population of this study was comprised of all the undergraduate students studying art and mathematics at the Art and Architecture Faculty and Payambar Azam Educational Complex of Islamic Azad University, Central Tehran Branch. The final research sample included 928 students (266 males and 662 females) who were selected via stratified sampling. To measure the thinking styles and sensation seeking of the participants, Sternberg’s thinking style Inventory and Arnett's Inventory of sensation seeking were respectively administered. The results of Pearson’s correlation coefficient and t- test demonstrated that legislative, monarchic, oligarchic, anarchic, internal & liberal thinking styles had positive relationship with sensation seeking in male students. Legislative, judicial and liberal also had a positive relationship with sensation seeking in females whereas executive and conservative in females had a negative relationship with sensation seeking. Furthermore, males’ legislative and hierarchic had a positive relationship with academic achievement. In females, however, academic achievement had a positive relationship with legislative, oligarchic, internal, and liberal, and a negative relationship with executive and conservative. Finally, no meaningful relationship was found between males’ sensation seeking and academic achievement while there was a positive relationship between females’ sensation seeking and academic achievement.