The constructs of alexithymia and type D personality share many common characteristics theoretically and conceptually. Despite the fact that the measurement instruments of both constructs have been utilized widely in psychosomatic researches, there are a few researches, if any, in this area to date. This study aimed to do the simultaneous factor structure of alexithymia and type D personality. This was a descriptive-survey within the category of psychometric studies. All students in Hamadan universities constituted the statistical population of this study. Among the population, the number of 384 students (248 female and 136 male students) was selected through multi-stage sampling method. They answered the scales of Toronto alexithymia and type D personality. The results of exploratory and confirmatory factor analysis of type D (with two subscales) and alexithymia (with three subscales) showed that the five-factor model had a good fit with the data. The results also showed that alexithymia and type D personality are distinct and have separate constructs. However, it is necessary to conduct further researches on clinical and non-clinical samples for a more accurate understanding of the relationship between these two constructs.