Authenticity is associated with adaptive psychological characteristics and may be predictive of psychological vulnerability. The study was conducted with Turkish university students (N = 303; 158 women, 145 men; M age = 20.1 yr.). Participants completed the Turkish version of Authenticity Scale and the Psychological Vulnerability Scale. Psychological vulnerability was correlated positively with two subfactors of authenticity, accepting external influence and self-alienation, and negatively with the authentic living factor of authenticity. Self-alienation, accepting external influence, and authentic living were related to psychological vulnerability, accounting for 33% of the variance collectively. Authenticity is an important predictor of psychological vulnerability.