Which grocery store chains have been in business the longest?

The longest-standing grocery store chains include A&P (The Great Atlantic & Pacific Tea Company), founded in 1859, and Piggly Wiggly, established in 1916 as the first self-service grocery store. Other notable long-running chains are Safeway, founded in 1915, and Kroger, which began in 1883. These stores have shaped the grocery industry over the decades with their innovative business models and expansion strategies.