Abstract:
This independent study aims to examine customer satisfaction toward the service marketing mix of Chanthana Phanit Store in Chiang Kham District, Phayao Province. Data were collected from a sample of 380 respondents using questionnaires and analyzed using descriptive statisticsfrequency, percentage, mean, and standard deviationas well as the Importance-Performance Analysis (IPA) technique to identify key factors influencing customer satisfaction. The findings revealed that factors requiring immediate improvement (Quadrant A) were related to the physical environment, such as product trial areas, customer service points, andemergency alert systems. Factors to be maintained (Quadrant B) included product quality, pricing, distribution channels, promotional activities, personnel, service processes, and the stores image. Meanwhile, factors in Quadrant Clow in both importance and satisfactionincluded product variety, availability of new and modern items, payment systems, delivery services, and basic facilities such as restrooms, parking, and signage. The study suggests that service quality development should be aligned with customer expectations across all dimensions to enhance satisfaction comprehensively.