Objective: Causal uncertainty is being uncertain about the causes of social events. Causal uncertainty is related with effortful information processing, attributional processes, depression, anxiety, and negative affect. Although causal uncertainty is implicated in relation to many psychiatric as well as clinical and social psychological constructs, a Turkish version of Causal Uncertainty Scale is missing. The present study was carried out in order to translate the Causal Uncertainty Scale into Turkish, and examine its validity and reliability. Methods: It was translated into Turkish by three English-Turkish bilinguals who first worked independently, then worked together. Once a version was agreed upon, the scale was back-translated into English and was found to be equivalent. The final Turkish scale was tested upon 138 university students. Results: Item analysis, factor analysis, and internal reliability tests showed that the Turkish scale was internally reliable. Discriminant and predictive validity tests indicated that the Turkish scale was valid. There were no sex or age differences in Turkish scale, attesting further to its reliability and validity. Discussion: Future studies can use the validated Turkish Causal Uncertainty Scale both to replicate the findings found in other countries and to venture into new research areas. [Anadolu Psikiyatri Derg 2015; 16(0.100): 19-22]