This study examined the psychometric properties of the White Bear Suppression Inventory (WBSI) in a sample of 273 Turkish undergraduate students. The WBSI assesses people's tendency toward thought suppression. The reliability and validity analyses of the Turkish version of the scale indicated that the WBSI had adequate psychometric properties in a Turkish sample. Internal consistency, and split-half and test-retest reliability coefficients were satisfactory. Consistent with the original WBSI, factor analysis of the scale identified a single component that accounted for 43.3% of the total variance. Concurrent validity of the Turkish version indicated that the scale exhibited significantly positive correlations with obsessive-compulsive, depression, and trait anxiety symptoms, as well as with responsibility attitudes, and thought-action fusion biases. All these findings supported the cross-cultural validity of WBSI.