Chamnan Yaovabun (Thai: ชำนาญ ยุวบูรณ์; 20 October 1914 – 1 July 2015) was a Thai politician and diplomat.

Life and career Yaovabun was born 20 October 1914 in Ang Thong Province. He was the first person to earn a political science doctorate from Chulalongkorn University.

From 30 December 1968 – 31 December 1972, he served as the Thai Ambassador to Argentina. From 14 May 1970 to 31 December 1972, he served as the Thai Ambassador to Chile. From May 27, 1970 –December 31, 1972, he served as the ambassador of Thailand to Bolivia, and from May 27, 1970 –December 31, 1972, he served as the Thai ambassador to Paraguay, all positions during that period held residency in Buenos Aires.

He was the Inaugural Governor of Bangkok, being appointed on 1 January 1973 and holding the position for 294 days until 22 October 1973.

He was awarded a number of insignia, including the Insignia of the Order of the Crown 2nd Floor, Tutiyajun Jomklao.

He died in Bangkok on 1 July 2015, aged 100.

Royal decorations 1965 − Knight Commander of the Most Illustrious Order of Chula Chom Klao 1967 − Knight Grand Cordon of the Most Exalted Order of the White Elephant 1966 − Knight Grand Cordon of the Most Noble Order of the Crown of Thailand 1970 − Bitaksa Seri Chon – Freemen Safeguarding Medal (Second Class, Second Category) 1958 − Border Service Medal 1959 − Chakrabarti Mala Medal – Medal for Long Service and Good Conduct (Civil) 1967 − First Class of Boy Scout Citation Medal of Vajira 1956 − King Bhumibol Adulyadej's Royal Cypher Medal - Third Class 1968 − King Bhumibol Adulyadej's Court Medal - Gold Class 1950 − King Rama IX Coronation Medal 1981 − First Class (Gold Medal) of Red Cross Medal of Appreciation

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