This article aims to define what kind of relationship exists between pathological traits and defense mechanisms. Primary data was used in this research, which has been collected from 14 th until 30 th of March in 2017. Research participants were 57% male and 43% female in the age of early adultness 25-39 years (M = 29.9, SD = 3.33). Results showed that many relationships exist between pathological traits and defense mechanisms. Received results may be used for clinical psychologists or any other health services workers who deal with personality disorders.