A LBMA gold bar is simply a gold bar manufactured by a refiner listed in the Good Delivery list (LBMA-approved refiner). Therefore, a LBMA gold bar is a bullion bar manufactured with the same quality standards as a Good Delivery bar.

The London Bullion Market Association (LBMA) is an international trade association, representing the global market for gold and silver bullion which has a global client base. the London bullion market is a wholesale over-the-counter market for the trading of gold and silver. Trading is conducted amongst members of the London Bullion Market Association (LBMA), overseen by the Bank of England. Most of the members are major international banks or bullion dealers and refiners.