The purpose of this study was to translate and validate the Lesbian, Gay, and Bisexual Identity Scale(LGBIS), which is a multidimensional measure of sexual minority identity. For this, we conducted exploratory factor analysis in a sample of 201 LGBs. Identical to the original scale, eight factors were extracted (i.e., Concealment Motivation, Identity Uncertainty, Internalized Homonegativity, Difficult Process, Acceptance Concerns, Identity Superiority, Identity Centrality, and Identity Affirmation), but one item was removed. In addition, the reliabilities of the eight factors except Concealment Motivation were satisfactory. Confirmatory factor analysis revealed that the 8-factor model had a good fit to data. Finally, criterion validity was good with other identity related scales as well as the psychological-functioning scales. In conclusion, the Korean version of the LGBIS is a valid measure of multidimensional LGB identity and consists of 8 factors and 26 items.