The paper presents the Polish version of the Posttraumatic Cognitions Inventory developed by Foa and colleagues Psychological Assessment, 11(3), 303-314 (Foa et al., 1999). The scale measures three types of cognitions that are typically associated with traumatic experiences: negative cognitions about the self, negative cognitions about the world, and self-blame. The scale was translated to Polish using a forwardbackward translation method; it was administered to a group of adult Polish women from the general population. A total of 337 individuals participated in the project. Traumatic experiences of sexual and non-sexual type were assessed and separate analyses were conducted for cognitions related to trauma of non-sexual and sexual nature. Moreover, the cumulative trauma and the severity of symptoms of the posttraumatic stress disorder were measured. Reliability of all scales was proven to be very good, with Cronbach-α for all scales above.80. There was a positive correlation between all three types of posttraumatic cognitions and (1) severity of the PTSD symptoms, (2) number of different traumatic events. The results of the current study provided partial support for the three factor structure of the tool: three factors emerged in exploratory factor analyses, but the correlations between the subscales were very high. Also, confirmatory factor analyses did not support the original solution. Overall, the Polish version of the PTCI has good psychometric properties and can be used in research, considerable evidence to support the three factor solution was also found.