The purpose of this study was to determine which attributes of service quality(SERVQUAL) influenced customer satisfaction with casual dining restaurants inPhuket. The researcher examined the relationships between customer satisfaction andcustomer loyalty (word-of-mouth and repurchase intention). The results of factoranalysis identified four main service quality factors: 1) Personnel and Customers’Relationship, 2) Environment Service Provider, 3) Service Providers’ Attitude andCompetencies, and 4) Service Providers’ Initiative in Serving Guests. The findings ofthis study indicated that the service quality factors had a positive impact on overallcustomer satisfaction. In turn, customer satisfaction is likely to increase customerloyalty (word-of-mouth endorsements and repurchase intention) to the casual diningrestaurant environment. The results showed that Thai casual dining restaurants had ahigher significant difference than Japanese, Italian, and Mediterranean casual diningrestaurants in overall service quality.