This study aimed to develop the Japanese version of the Utrecht-Management of Identity Commitments Scale (U-MICSJ) and evaluate the factor structure, reliability, and concurrent validity of this measure. University students ( N = 435) participated in this study. Confirmatory factor analyses revealed that a three-factor model provided a better fit than alternative one- and two-factor models within the global, educational, and interpersonal domains for this scale. An analysis of Cronbach’s α coefficients showed good scale reliability. In accordance with our hypotheses, correlation analyses revealed that commitment, in-depth exploration, and reconsideration of commitment were significantly related to measures of self and personality, psychosocial problems, and parental relationships within the educational domain. However, within the global and interpersonal domains, concurrent validity was not confirmed. Implications for validating the U-MICSJ interpersonal domain are discussed.