The purposes of this study were to understand the influence of perceived service quality in Korean restaurants on customer satisfaction and to empirically analyze whether or not nationality (foreigner vs. Korean) plays a moderating role in the relationship between perceived service quality and customer satisfaction. Based on a total of 2,812 samples obtained from empirical research, the hypothesized relationships in the model were tested simultaneously using a structural equation model (SEM). The SEM results showed that menu quality, value & price, employee service, and physical environment among customers' perceived service quality had significant positive effects on customer satisfaction. In addition, the effect of perceived service quality in Korean restaurants on customer satisfaction was found to be partially moderated by nationality (foreigner and Korean). Limitations and future research directions are also discussed.