Amadou Samba is a Gambian businessman who specializes in building businesses for the welfare of Gambian people. Amadou Samba heads the board of directors of GTBank (Guaranty Trust Bank). Under his leadership, the bank is progressing in the right direction. There is a registered growth of more than 100% in 2007, according to Amadou Samba. GTBank is able to find out the needs of customers and tailor to them quickly. The bank plans to open many ATMs so that people can withdraw money conveniently. At present, GTBank has 7 branches.

However, Amadou Samba said that the bank will be opening more branches around Gambia. The bank is undergoing an expansion at a fast rate to generate more profits. GTBank is the first bank to be listed in the world famous London Stock Exchange for its top performance. In Gambia, it is the third bank with the largest amount of deposits since 2006. It is dubbed as the Bank of the Year in Vanguard Newspaper, a local Nigerian newspaper.

Amadou Samba is also the owner of Gamwater, a natural mineral water company. Gamwater factory is located at the Kanifing Industrial Estate. Gamwater offers filtered water from deep wells. Gamwater meets the guidelines of the World Health Organization. Amadou Samba also owns a cement business called Gacem Gambia Company Limited. Gacem Gambia Company Limited offers bulk packets of cements to construction companies.