This study aimed to develop a Japanese version of Emotion Regulation Questionnaire (ERQ) developed by Gross & John (2003). The two-dimension ERQ structure was confirmed by confirmatory factor analysis, and each of the two scales (Reappraisal and Suppression) showed enough internal consistency and test-retest reliability in a Japanese undergraduate sample ( N =541). Japanese version of Emotion Regulation Questionnaire (ERQ-J) showed the predicted associations with measures of personality, emotion experience, emotion suppression, and well-being. Reappraisal was positively correlated with well-being, whereas negatively correlated with neuroticism and negative emotion experience. Suppression, in contrast, was positively correlated with emotion suppression, whereas negatively correlated with extraversion. Suppression was not correlated with negative emotion experience or well-being. These findings suggest that ERQ-J is a reliable and valid measure to identify two emotion regulation strategies.