This study investigated digital-related factors affecting life satisfaction among married immigrants in South Korea, based on the theory of planned behavior (TPB). This study conducted a secondary data analysis of the data of the Digital Divide 2022. A total of 621 married immigrants’ demographic characteristics and six digital-related factors based on TPB were analyzed. Attitudes toward using digital media, self-efficacy in using digital media, competence in using digital media, digital helper, online social networking, and online social participation were significantly positively correlated with life satisfaction. In addition, living with a spouse, education level, job, self-efficacy, competency in using digital media, and online social participation positively affected life satisfaction. Digital education programs focusing on self-efficacy and competence in using digital media should be developed to improve life satisfaction. Furthermore, it is necessary to explore various digital approaches to increasing married immigrants’ online social participation.