Previous research has shown that psychological capital (PsyCap) is associated with desired employee behavioral and performance outcomes. Extending previous research, we examine, in two studies, if the PsyCap of Norwegian air traffic controllers is related to their perceptions of safety climate. Based on bootstrapping procedures, results from Study 1 (N = 77) and Study 2 (N = 38) revealed that PsyCap was positively correlated with safety climate. In Study 1, PsyCap explained 31% of the variance in safety climate. Controlling for mediating effects of positive and negative emotions in Study 2, PsyCap explained 15.5% of the variance. These results provide first-time empirical evidence linking PsyCap to safety climate in safety critical organizations.