This study aimed to investigate the relationships of the antisocial personality traits called the Dark Triad, which includes Machiavellianism, narcissism, and psychopathy, with life skills including the ability to adapt to society (i.e., decision-making, interpersonal relationships, effective communication, and coping with emotions). A total of 272 university students completed the Japanese version of the Short Dark Triad and Life Skills Scale for Adolescents and Adults. Multivariate multiple regression analysis showed that Machiavellianism, narcissism, and psychopathy related to life skills in different ways. These results support the findings of previous studies suggesting the link between the Dark Triad and social adjustment.