BackgroundThe HEXACO Personality Inventory-Revised (HEXACO-PI-R), available in 200-, 100-, and 60-item versions, has become one of the most frequently applied measurement tools for the assessment of basic personality dimensions.Participants and procedureIn this study we examined the Polish versions of the HEXACO-60 and the HEXACO-100 inventories in a community sample of 522 individuals (aged 16-75, M = 32.02, SD = 14.15, 56.3% female). We verified the factor validity of both inventories with exploratory structural equation modeling. Additionally, we tested a six-factor solution on the HEXACO-60 items with principal axis extraction and we compared a factor matrix of the Polish adaptation of the HEXACO-100 facets with the factor matrix of the original version of the HEXACO-100 facets in an exploratory factor comparison analysis. We analyzed correlations between HEXACO domains and various models of personality traits, including the Big Two, Big Six, Big Five, and 10 Big Five as-pects.ResultsInternal consistency reliability coefficients for scales and subscales were satisfactory. The analyses supported the six-factor structure of the inventories and the results of correlation analyses were consistent with expectations.ConclusionsThe results indicate that the Polish versions of the HEXACO-60 and the HEXACO-100 inventories are reliable and valid in-struments for measuring basic personality traits in the HEXACO model.