The aim of the study was to translate and cross-validate the Korean version of the Self-Beliefs, Writing-Beliefs, and Attitude Survey (SWAS), which was originally developed by Wright et al. (2019). 308 Korean eighth graders participated in this study by responding to the translated surveys via Qualtrics. Confirmatory factor analysis revealed that the original four-factor model including attitudes, beliefs about writing, self-concept, and self-efficacy developed for American adolescents is applicable to Korean adolescents as well. In addition, both the entire instrument and the subscales showed high internal consistency. Implications for classroom teachers and future researchers are discussed.