The understanding of an individual’s personality type is important for better communication and to improve personal performances. The goal of this study is to evaluate the distribution of personality types amongst dental students and to study the relationship between academic achievement and personality type. This is a cross-sectional study with a total of 251 dental students at King Abdulaziz University, Dental college in Jeddah. Using validated DiSC assessment questionnaire, data was collected. A chi-square test was used to analyze the data. Participants in the study 147(58.5%) female, while 104 (%41 were male. The GPA 137 (54.5%) was 5 - 4.5, 88 (35.2%) was 4.4 – 3.75, and 26 (10.3%) was 3.74 – 2.75. A total of 68 (26.9%) of the participant belonged to D category, comprising 42 females and 26 males, 66(26.1%) of the participant belonged to I category, comprising 34 females and 32 males, 70 (28.1%) belonged to S category, comprising 43 females and 28 males and a total of 47 (19%) belonged to C category, comprising 29 females and 18 males. The relationship between academic achievement and DiSC assessment revealed no significance having P value (0.05). The highest percentage of dental students in King Abdulaziz University, is conformed to the S personality type, whilst the C personality type had the lowest percent, with no significant relation between academic year and personality types. There is significant association, between personality type and GPA, yet there was proximity in the number of students under each DiSC personality type and their performance.
