| Rear Admiral Thawan Thamrongnawasawat | |
|---|---|
| ถวัลย์ ธำรงนาวาสวัสดิ์ | |
|  | |
| 8th Prime Minister of Thailand | |
| In office 23 August 1946 – 8 November 1947 | |
| Monarch | Bhumibol Adulyadej | 
| Preceded by | Pridi Phanomyong | 
| Succeeded by | Khuang Abhaiwongse | 
| Personal details | |
| Born | 21 November 1901 Ayutthaya, Ayutthaya, Siam | 
| Died | 3 December 1988 (aged 87) Phramongkutklao hospital, Phaya Thai (modern Ratchathewi), Bangkok, Thailand | 
| Nationality | Thai | 
| Spouse(s) | 
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| Religion | Theravada Buddhism | 
Thawan Thamrongnawasawat (Thai: ถวัลย์ ธำรงนาวาสวัสดิ์, Chinese: 郑连淡, alternative transcription Thawal Thamrong Navaswadhi, short Thamrong), born Thawan Tharisawat (Thai: ถวัลย์ ธารีสวัสดิ์; 21 November 1901 – 3 December 1988), was the 8th Prime Minister of Thailand from 1946-1947. Before becoming a politician, he was a naval officer, holding the rank of rear admiral.
A career naval officer of Chinese ancestry, Thamrong was a leading member of the anti-Japanese Seri Thai resistance movement during World War II. He became Thailand's elected prime minister on 23 August 1946, replacing Khuang Abhaiwongse. However, he was removed from office by a military coup orchestrated by Field Marshal Plaek Pibulsonggram on 8 November 1947. Abhaiwongse then assumed the post of prime minister once more.