The Constitution of the Kingdom of Thailand (Interim), Buddhist Era 2549 (2006) (Thai: รัฐธรรมนูญแห่งราชอาณาจักรไทย (ฉบับชั่วคราว) พุทธศักราช 2549; rtgs: Rattha Thammanun Haeng Ratcha Anachak Thai (Chabap Chua Khrao) Phuttha Sakkarat Song Phan Ha Roi Si Sip Kao) was an interim constitution of Thailand enacted to replace the 1997 Constitution which was repealed by the Council for Democratic Reform (CDR) after it seized power from the government of Thaksin Shinawatra in the 2006 Thailand coup. Released on 27 September 2006 and promulgated on 1 October 2006, the Constitution allowed the junta to retain significant control over the appointed civilian government and the drafting of a permanent constitution. The CDR would be transformed into a permanent Council for National Security (CNS) and would appoint the head of the executive branch, the entire legislature, and the drafters of a permanent constitution. The Constitution made no mention of succession, instead leaving it to "constitutional practice." The draft came under strong public criticism as being a step backwards from the 1997 "People's Constitution". The constitution did not repeal junta bans restricting freedom of speech, assembly, and political activity; these bans were subsequently revoked by an act on 27 December 2006.
This interim constitution was replaced by the 2007 Constitution on 24 August 2007.
The junta appointed a legal panel to draft an interim charter. The team was led by former Senate speaker Meechai Ruchuphan, and originally included jurists Borwornsak Uwanno and Wissanu Krea-ngam. Both had played key roles in drafting the 1997 Constitution and had served under the deposed government, although they had resigned several months before the coup. Both resigned from the panel after public criticism that they were members of the ancien regime. Thammasat vice-rector Prinya Thewanaruemitkul harshly criticized the two, saying that they were "not honourable enough to look after the democratic system." Both refused to play any further role with the military junta. After the draft charter was promulgated, Meechai resigned as chief drafter; the junta appointed Jaran Pakdithanakul, former secretary to the Supreme Court president, as his replacement.