The main aim of the study was to check: (a) attachment-related differences in alexithymia and (b) the mediating role of mind-mindedness in attachment-alexithymia relationship. Method: Attachment (PAM; Berry et al., 2007), alexithymia (TAS-20; Bagby, Taylor, & Parker, 1994) and mind-mindedness (“describe your friend” method; Meins et al, 2008) were measured in the sample of 128 Polish undergraduates. Results: Positive associations were seen between attachment anxiety and overall alexithymia scores and difficulty identifying emotions. Attachment avoidance was positively associated with overall alexithymia score, difficulty describing feelings and externally oriented thinking. Mind-mindedness was not related to neither attachment or alexithymia. Conclusion: There are attachment-related differences in alexithymia, but mind-mindedness seems not to mediate attachment-alexithymia relationship.