Songkhla is one of the southern provinces (changwat) of Thailand. Neighboring provinces are Satun, Phatthalung, Nakhon Si Thammarat, Pattani, and Yala. To the south it borders Kedah and Perlis of Malaysia.

Kedah, also known by its honorific Darul Aman and historically as Queda, is a state of Malaysia, located in the northwestern part of Peninsular Malaysia. The state covers a total area of over 9,000 km2, and it consists of the mainland and the Langkawi islands. The mainland has a relatively flat terrain, which is used to grow rice, while Langkawi is an archipelago, most of which are uninhabited islands.