BACKGROUND AND PURPOSE: Patient acceptance of implantable cardioverter defibrillators (ICDs) is one of the factors influencing clinical outcomes. This study aimed to develop a Japanese version of the Florida Patient Acceptance Survey (FPAS; a measure of acceptance of ICDs), examine its reliability and validity, and test instrument reliability and ability to generate valid data in a new population. METHODS: 122 outpatients with ICD, cardiac resynchronization therapy defibrillator (CRTD) completed the FPAS, the 12-Item Short-Form Health Survey developed for the Medical Outcomes Study, and the Hospital Anxiety and Depression Scale. RESULTS: Confirmatory and exploratory factor data analyses yielded a three-factor model with nine items. This version of the FPAS had high internal consistency, both for the single factor scale and all other subscales; Cronbach's 𝛼 ranged from .78 to. 84. CONCLUSION: The scale was shown to be valid and reliable for assessing device acceptability in Japanese patients with ICD.