This study investigated the reliability and validity of the Japanese version of the Oxford Schizotypal Personality Scale (STA). Participants included two samples of undergraduates. The results showed high internal consistency and test-retest reliability. The STA had significant positive correlations with the Oxford-Liverpool Inventory of Feeling and Experiences, and the Paranoia Checklist. It was not correlated with the Rosenberg Self-esteem Scale and the Liebowitz Social Anxiety Scale. This indicates that the STA has good psychometric properties and convergent and discriminant validity. These results indicate that the Japanese version of the STA is a highly reliable and valid scale of positive schizotypal personality characteristics.