The Constitution of the Kingdom of

The Constitution of the Kingdom of Thailand, Buddhist Era 2540 (1997) (Thai: รัฐธรรมนูญแห่งราชอาณาจักรไทย พุทธศักราช ๒๕๔๐; rtgs: Rattha Thammanun Haeng Ratcha Anachak Thai Phuttha Sakkarat Song Phan Ha Roi Si Sip) was a constitution of Thailand enacted on 11 October 1997 to replace the 1991 Constitution and was widely hailed as a landmark in Thai democratic constitutional reform. The Constitution was repealed by the Council for Democratic Reform on 19 September 2006 following a successful military coup and was replaced by the 2006 Constitution on 1 October 2006.

The 1997 Constitution was the first constitution to be drafted by popularly-elected Constitutional Drafting Assembly, hence was popularly called the "People's Constitution".[1] The 1997 Constitution created a bicameral legislature. For the first time in Thai history, both houses were directly elected. Many human rights are explicitly acknowledged, and measures were established to increase the stability of elected governments.