A study was undertaken to study Big Five personality traits of post graduate students of Kashmir University, Kashmir. The sample for the present study consists of 250 post graduate students of Kashmir University. For the assessment of personality traits, NEOFFI3 developed by McCrae and Costa (1986) was used for the collection of data. The data collected was analyzed with the help of various statistical techniques like %age, mean, S.D and t-test by using IBM SPSS. Neuroticism emerged as the dominant personality trait, with average level of extraversion and openness and low level of agreeableness and conscientiousness. Both male and female students either rural or urban don’t differ significantly on Big Five personality traits except for neuroticism. Females scored high on neuroticism. Further students from nuclear families were scored high on conscientiousness than from students of joint families.