The Siamese Confederation is a federal, parliamentary, constitutional monarchy, directorial system. This page will display the list of the head of the governments and the representative of the government of Siam.
List[]
| Order in Office | Name | Portrait | Date | Head of State |
|---|---|---|---|---|
| Chief Minister of Secretariat (ex-officio of President of Supreme Council of State of Siam) | ||||
| 1 | Prince Bhanurangsi, Prince of Bhanubandhuvansa Varateja | 28 November 1925 - 13 June 1928 | Rama V | |
| President of the Committee of the People's Assembly | ||||
| 1 | Phraya Manopakorn Nitithada | 24 June 1932 - 9 December 1932 | 1st - 2nd Triumvirate of Assembly | |
| acting | Prince Chakrabongse Bhuvanath, Prince of Phitsanulok | 9 December 1932 | 2nd Triumvirate of Assembly | |
| 2 | Phraya Phahon Phonphayuhasena, the Royal Equivalency | 10 December 1932 - 31 December 1932 | Himself / Rama VII | |
| Governor of Council of Ministers | ||||
| 1 | Phraya Phahon Phonphayuhasena, the Royal Equivalency | 31 December 1932 - ? | Himself / Rama VII | |