Diana Department Store () is a chain of department stores in southern Thailand. It was a public company with a ticker symbol CGD and traded on the SET.
The company has three stores, one in Pattani and two in Hat Yai, Songkhla Province. It also has a chain of Di-Mart convenience stores in Songkhla and Pattani.
In 2006, Diana Department Store exited from the Stock Exchange of Thailand, sold under the backdoor of DragonOne company. The old SET code was DIANA.