The purpose of this study was the relationship between attachment styles and self-esteem with type D personality. 245 students (66 males & 179 females) have been selected using a cluster random sampling to fill out the adult attachment style, Rosenberg self- esteem, and type D personality questionnaires. The results show that there is a significant positive correlation between secure attachment style and self-esteem and a negative relationship between insecure attachment styles and self-esteem. Research findings also reveals that there is a negative relationship between secure attachment style and type D personality and a significant positive correlation between insecure attachment styles and type D personality. Results of stepwise regression analyses indicate that secure, ambivalent and avoidant attachment styles play a significant role in self-esteem prediction, respectively. Results also of stepwise regression analyses indicate that avoidant, secure and ambivalent attachment styles play a significant role in predicting type D personality, respectively. Analyses results also show that there is no gender significance among attachment styles. Our findings prove that attachment styles play the significant role in determining self- esteem and type D personality.