Paper Title
The Basic Concept Of Constituional Customary Law In Thai Legal System

Thailand faces with a big constitutional gap. In another sense, there is no crystal clear what "Constitutional Customary Law" means in the Constitution. Nevertheless, this problem can be solved by studying the meaning of which throughthe concept based on three group of scholars to find out its meaning in order for filling the gap. As a result, the term �Constitutional Customary Law� means mere practices, concerning political institutions and citizen rights, which has binding force of law. Keywords� Custom, Customary Law, Constitutional Customary Law, Constitutional Convention.