Objectives. To examine relationships between specific dysfunctional beliefs and self-reported personality disorder types. Design. Cross-sectional. Method. One hundred and sixty-four clinical psychology out-patients completed the Personality Beliefs Questionnaire (PBQ) and Millon Multiaxial Clinical Inventory-III (MCMI-III): 155 completed both. Avoidant, dependent, passive-aggressive and schizoid PDs, and relevant PBQ subscales were studied. Results. Presence or absence of PD was predicted by scores on the index PBQ subscale. Conclusions. This pattern has previously been reported for PDs diagnosed by structured interview only. PBQ relationships with passive-aggressive and schizoid PD have not previously been reported.