Ninth Reign PortraitNameDate of AppointmentCeased to be RegentNoteKing Bhumibol Adulyadej (Rama IX)100px|Prince Rangsit PrayurasakdiPrince Rangsit Prayurasakdi,the Prince of Chainat16 June 1946Royal Gazette, Announcement of the appointment of the Regency Council, Volume 63, Chapter 48, Page 240, 25 June 2489 B.E.7 November 1947Appointed two person regency council, when the king decided to return to his studies at the University of Lausanne in Switzerland.100px|Phraya ManavaratseviPhraya Manavaratsevi(Plod Vichear na Songkhla)100px|Standard of the Regent of SiamRegency under the Privy Council9 November 1947Royal Gazette, Announcement on the appointment of the establishment of the Privy Council, Volume 64, Chapter 54, Page 688, 11 November 2490 B.E.23 January 1949After the Siamese coup d'état of 1947 a new Privy Council was created and was given the power of regency under the Temporary Constitution of 1947.The council was composed of:1. Prince Rangsit Prayurasakdi, the Prince of Chainat2. Prince Dhani Nivat,the Prince Bidyalabh Bridhyakon3. Prince Alongkot, the Prince Adireksorn Udomsakdi4. Phraya Manavaratsevi (Plod Vichear na Songkhla)5. General Adul Aduldejcharat (Bhat Peungprakhun )The council was relieved of the regency with the promulgation of the 1949 Constitution.100px|Prince Rangsit PrayurasakdiPrince Rangsit Prayurasakdi,the Prince of Chainat23 June 1949Royal Gazette, Announcement on the appointment of the Regent, Volume 66, Chapter 34, Page 491, 28 June 2492 B.E.Late 1949Appointed sole regent by recommendation of the National Assembly. Regency ended when the king returned to Thailand for his coronation ceremony on 5 May 1950.5 June 1950Royal Gazette, Announcement on the appointment of the Regent, Volume 67, Chapter 32, Page 645, 6 June 2493 B.E.7 March 1951Appointed regent during the king's travel and stay in Switzerland. Died in Office.100px|Standard of the Regent of SiamPrince Dhani Nivat,the Prince Bidyalabh Bridhiyakon12 March 1951Royal Gazette, Announcement on the appointment of the Regent, Volume 68, Chapter 18, Page 204, 20 March 2494 B.E.19 December 1952Replace Prince Rangsit as regent. Regency ends after the king's permanent return to Thailand.100px|Queen Sirikit of Thailand22 October 1956Royal Gazette, Announcement on the appointment of the Regent, Volume 76, Chapter 73, Page 1035, 25 September 2499 B.E.5 November 1956Appointed regent during the king's absence as a Bhikkhu monk in the Buddhist Sangha (at Wat Bowonniwet Vihara). Afterwards title elevated to Queen Regent.100px|Princess SrinagarindraPrincess Srinagarindra, the Princess Mother of Thailand18 December 1959Royal Gazette, Announcement on the appointment of the Regent, Volume 76, Chapter 116, Page 12, 17 December 2502 B.E.21 December 1959State visit to the Republic of Vietnam by the king and queen.9 February 1960Royal Gazette, Announcement on the appointment of the Regent, Volume 77, Chapter 10, Page 6, 4 February 2503 B.E.16 February 1960State visit to the Republic of Indonesia by the king and queen.2 March 1960Royal Gazette, Announcement on the appointment of the Regent, Chapter 77, Chapter 16, Page 120, 1 March 2503 B.E.5 March 1960State visit to the Union of Burma by the king and queen.14 June 1960Royal Gazette, Announcement on the appointment of the Regent, Volume 77, Chapter 49, Page 26, 9 June 2503 B.E.1960State visit to the United States of America and European countries by the king and queen.11 March 1962Royal Gazette, Announcement on the appointment of the Regent, Volume 79, Chapter 23, Page 19, 8 March 2505 B.E.22 March 1962State visit to the Islamic Republic of Pakistan by the king and queen.20 June 1962Royal Gazette, Announcement on the appointment of the Regent, Volume 79, Chapter 53, Page 9, 13 June 2505 B.E.27 June 1962State visit to the Federation of Malaya by the king and queen.17 August 1962Royal Gazette, Announcement on the appointment of the Regent, Volume 79, Chapter 74, Page 4, 16 August 2505 B.E.13 September 1962State visit to New Zealand and Australia by the king and queen.100px|Standard of the Regent of SiamPrince Dhani Nivat,the Prince Bidyalabh Bridhiyakon(President of the Privy Council)27 May 1963Royal Gazette, Announcement on the appointment of the Regent, Volume 80, Chapter 52, Page 25, 24 May 2506 B.E.6 June 1963State visit to Japan and Republic of China by the king and queen.9 July 1963Royal Gazette, Announcement on the appointment of the Regent, Volume 80, Chapter 69, Page 8, 8 July 2506 B.E.14 July 1963State visit to the Philippines by the king and queen.100px|Princess SrinagarindraPrincess Srinagarindra, the Princess Mother of Thailand12 September 1964Royal Gazette, Announcement on the appointment of the Regent, Volume 81, Chapter 85, Page 614, 8 September 2507 B.E.6 October 1964Visit to the Kingdom of Greece on the occasion of the marriage of King Constantine II and Anne-Marie of Denmark and the state visit to the Republic of Austria by the king and queen.15 July 1966Royal Gazette, Announcement on the appointment of the Regent, Volume 83, Chapter 57, Page 451, 5 July 2509 B.E.1966State visit to the United Kingdom by the king and queen.23 April 1967Royal Gazette, Announcement on the appointment of the Regent, Volume 84, Chapter 35, Page 1, 22 April 2510 B.E.30 April 1967State visit to the Imperial State of Iran by the king and queen.6 June 1967Royal Gazette, Announcement on the appointment of the Regent, Volume 84, Chapter 49, Page 3, 1 June 2510 B.E.1967State visit to the United States of America and Canada by the king and queen.
Ninth Reign PortraitNameDate of AppointmentCeased to be RegentNoteKing Bhumibol Adulyadej (Rama IX)100px|Prince Rangsit PrayurasakdiPrince Rangsit Prayurasakdi,the Prince of Chainat16 June 1946Royal Gazette, Announcement of the appointment of the Regency Council, Volume 63, Chapter 48, Page 240, 25 June 2489 B.E.7 November 1947Appointed two person regency council, when the king decided to return to his studies at the University of Lausanne in Switzerland.100px|Phraya ManavaratseviPhraya Manavaratsevi(Plod Vichear na Songkhla)100px|Standard of the Regent of SiamRegency under the Privy Council9 November 1947Royal Gazette, Announcement on the appointment of the establishment of the Privy Council, Volume 64, Chapter 54, Page 688, 11 November 2490 B.E.23 January 1949After the Siamese coup d'état of 1947 a new Privy Council was created and was given the power of regency under the Temporary Constitution of 1947.The council was composed of:1. Prince Rangsit Prayurasakdi, the Prince of Chainat2. Prince Dhani Nivat,the Prince Bidyalabh Bridhyakon3. Prince Alongkot, the Prince Adireksorn Udomsakdi4. Phraya Manavaratsevi (Plod Vichear na Songkhla)5. General Adun Adundetcharat (Bat Phuengphrakhun )The council was relieved of the regency with the promulgation of the 1949 Constitution.100px|Prince Rangsit PrayurasakdiPrince Rangsit Prayurasakdi,the Prince of Chainat23 June 1949Royal Gazette, Announcement on the appointment of the Regent, Volume 66, Chapter 34, Page 491, 28 June 2492 B.E.Late 1949Appointed sole regent by recommendation of the National Assembly. Regency ended when the king returned to Thailand for his coronation ceremony on 5 May 1950.5 June 1950Royal Gazette, Announcement on the appointment of the Regent, Volume 67, Chapter 32, Page 645, 6 June 2493 B.E.7 March 1951Appointed regent during the king's travel and stay in Switzerland. Died in Office.100px|Standard of the Regent of SiamPrince Dhani Nivat,the Prince Bidyalabh Bridhiyakon12 March 1951Royal Gazette, Announcement on the appointment of the Regent, Volume 68, Chapter 18, Page 204, 20 March 2494 B.E.19 December 1952Replace Prince Rangsit as regent. Regency ends after the king's permanent return to Thailand.100px|Queen Sirikit of Thailand22 October 1956Royal Gazette, Announcement on the appointment of the Regent, Volume 76, Chapter 73, Page 1035, 25 September 2499 B.E.5 November 1956Appointed regent during the king's absence as a Bhikkhu monk in the Buddhist Sangha (at Wat Bowonniwet Vihara). Afterwards title elevated to Queen Regent.100px|Princess SrinagarindraPrincess Srinagarindra, the Princess Mother of Thailand18 December 1959Royal Gazette, Announcement on the appointment of the Regent, Volume 76, Chapter 116, Page 12, 17 December 2502 B.E.21 December 1959State visit to the Republic of Vietnam by the king and queen.9 February 1960Royal Gazette, Announcement on the appointment of the Regent, Volume 77, Chapter 10, Page 6, 4 February 2503 B.E.16 February 1960State visit to the Republic of Indonesia by the king and queen.2 March 1960Royal Gazette, Announcement on the appointment of the Regent, Chapter 77, Chapter 16, Page 120, 1 March 2503 B.E.5 March 1960State visit to the Union of Burma by the king and queen.14 June 1960Royal Gazette, Announcement on the appointment of the Regent, Volume 77, Chapter 49, Page 26, 9 June 2503 B.E.1960State visit to the United States of America and European countries by the king and queen.11 March 1962Royal Gazette, Announcement on the appointment of the Regent, Volume 79, Chapter 23, Page 19, 8 March 2505 B.E.22 March 1962State visit to the Islamic Republic of Pakistan by the king and queen.20 June 1962Royal Gazette, Announcement on the appointment of the Regent, Volume 79, Chapter 53, Page 9, 13 June 2505 B.E.27 June 1962State visit to the Federation of Malaya by the king and queen.17 August 1962Royal Gazette, Announcement on the appointment of the Regent, Volume 79, Chapter 74, Page 4, 16 August 2505 B.E.13 September 1962State visit to New Zealand and Australia by the king and queen.100px|Standard of the Regent of SiamPrince Dhani Nivat,the Prince Bidyalabh Bridhiyakon(President of the Privy Council)27 May 1963Royal Gazette, Announcement on the appointment of the Regent, Volume 80, Chapter 52, Page 25, 24 May 2506 B.E.6 June 1963State visit to Japan and Republic of China by the king and queen.9 July 1963Royal Gazette, Announcement on the appointment of the Regent, Volume 80, Chapter 69, Page 8, 8 July 2506 B.E.14 July 1963State visit to the Philippines by the king and queen.100px|Princess SrinagarindraPrincess Srinagarindra, the Princess Mother of Thailand12 September 1964Royal Gazette, Announcement on the appointment of the Regent, Volume 81, Chapter 85, Page 614, 8 September 2507 B.E.6 October 1964Visit to the Kingdom of Greece on the occasion of the marriage of King Constantine II and Anne-Marie of Denmark and the state visit to the Republic of Austria by the king and queen.15 July 1966Royal Gazette, Announcement on the appointment of the Regent, Volume 83, Chapter 57, Page 451, 5 July 2509 B.E.1966State visit to the United Kingdom by the king and queen.23 April 1967Royal Gazette, Announcement on the appointment of the Regent, Volume 84, Chapter 35, Page 1, 22 April 2510 B.E.30 April 1967State visit to the Imperial State of Iran by the king and queen.6 June 1967Royal Gazette, Announcement on the appointment of the Regent, Volume 84, Chapter 49, Page 3, 1 June 2510 B.E.1967State visit to the United States of America and Canada by the king and queen.
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Adul Aduldejcharat (Bhat Peungprakhun
Adun Adundetcharat (Bat Phuengphrakhun