This study was conducted to identify the 16 personality traits among tribal (Gaddi) secondary school students and to find out the gender difference in all the 16 personality traits and differences in the academic achievement of male and female Tribal (Gaddi) secondary school students. The sample of 600 tribal (Gaddi) secondary school students was selected from different school of Kathua and Udhampur Districts. The investigator was used Cattell’s 16PF Questionnaire Form E to measure the personality traits of tribal (Gaddi) secondary school students. The marks of their previous qualified class were taken to find out the gender difference in the academic achievement. In order to analyse the data the investigator was used mean and t-test and discussion was made on the basis of the result, it was found from the results of this study that all the 16 personality factors viz A (Reserved Vs Outgoing), B (Less intelligent Vs More intelligent), C (Emotionally less stable Vs Emotionally stable), E (Submissive Vs Dominant), F (Serious Vs Happy-go-lucky), G (Expedient Vs Conscientious), H (Timid Vs Venturesome), I (Tough-minded Vs Tender-Minded), L (Trusting Vs Suspicious), M (Practical Vs Imaginative), N (Forthright Vs Shrewd), O (Self-assured Vs Apprehensive), Q1 (Conservative Vs Experimenting), Q2 (Group-oriented Vs Self sufficient), Q3 (Uncontrolled Vs Controlled) and Q4 (Relaxed Vs Tense) founds to be an average level among tribal (Gaddi) secondary school students. The results indicated that male and female tribal (Gaddi) secondary school students were also found to be average students in their 16 personality traits. It is also founds that male and female Gaddi secondary school students did not differ signtlificantly in their academic achievement. Teachers, parents and policy makers should pay more attention towards their education to overcome their problems.