OK was the supermarket brand showing the highest customer satisfaction in Japan as revealed in a survey conducted in May 2024. The discount store is operated by OK Corporation primarily in the Kanto region and Osaka Prefecture and received a customer satisfaction index score of **** points.
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Japan Productivity Center (JPC). (August 1, 2023). Leading supermarkets based on customer satisfaction index in Japan as of May 2024 [Graph]. In ÌÇÐÄÆÆ½â°æ. Retrieved July 28, 2026, from /statistics/1382913/japan-customer-satisfaction-index-supermarket-brand/
Japan Productivity Center (JPC). "Leading supermarkets based on customer satisfaction index in Japan as of May 2024." Chart. August 1, 2023. ÌÇÐÄÆÆ½â°æ. Accessed July 28, 2026. /statistics/1382913/japan-customer-satisfaction-index-supermarket-brand/
Japan Productivity Center (JPC). (2023). Leading supermarkets based on customer satisfaction index in Japan as of May 2024. ÌÇÐÄÆÆ½â°æ. ÌÇÐÄÆÆ½â°æ Inc.. Accessed: July 28, 2026. /statistics/1382913/japan-customer-satisfaction-index-supermarket-brand/
Japan Productivity Center (JPC). "Leading Supermarkets Based on Customer Satisfaction Index in Japan as of May 2024." ÌÇÐÄÆÆ½â°æ, ÌÇÐÄÆÆ½â°æ Inc., 1 Aug 2023, /statistics/1382913/japan-customer-satisfaction-index-supermarket-brand/
Japan Productivity Center (JPC), Leading supermarkets based on customer satisfaction index in Japan as of May 2024 ÌÇÐÄÆÆ½â°æ, /statistics/1382913/japan-customer-satisfaction-index-supermarket-brand/ (last visited July 28, 2026)
Leading supermarkets based on customer satisfaction index in Japan as of May 2024 [Graph], Japan Productivity Center (JPC), August 1, 2023. [Online]. Available: /statistics/1382913/japan-customer-satisfaction-index-supermarket-brand/