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John Tan is an American jeweler, entrepreneur, and television personality based in Louisville, Kentucky. He is the co-owner of Little John’s Derby Jewelry, a family-operated retail jewelry store known for custom diamond designs, engagement rings, and luxury gold pieces.
With more than two decades in the jewelry industry, Tan has become a widely recognized figure in Louisville’s business and cultural community. He is especially known in Louisville for his humorous and high-energy television commercials, which have made him a familiar and memorable local personality. His on-screen presence has contributed to his reputation as a locally iconic business figure.
In 2026, Tan appeared as a featured participant in the HBO documentary series Murder in Glitterball City, directed by Fenton Bailey and Randy Barbato. The two-part series explores crime and culture in Louisville and highlights Tan’s role as a prominent local business owner and media personality.
He continues to operate Little John’s Derby Jewelry while pursuing additional media and television opportunities.
