| Post: | Chief of the Royal Thai Navy |
| Native Name: | Thai: ผู้บัญชาการทหารเรือ |
| Flag: | Flag for Commander-in-Chief of the Royal Thai Navy.svg |
| Flagcaption: | Rank flag of the commander-in-chief |
| Incumbent: | Admiral Adung Phan-iam |
| Incumbentsince: | 1 October 2023 |
| Reports To: | Minister of Defence |
| Nominator: | Minister of Defence |
| Appointer: | King of Thailand |
| Termlength: | Until retired |
| Formation: | 8 April 1887 |
| Inaugural: | Prince |
| Website: | Navy leadership |
The Commander-in-Chief of the Royal Thai Navy (Thai: ผู้บัญชาการทหารเรือไทย), currently Admiral Adung Phan-iam, who is headquartered in Bangkok. Prior to 1887, the Navy was divided between the Front Palace and the Grand Palace, afterward the Navies were combined to create the Royal Siamese Navy.
The following individuals have commanded the Royal Thai Navy:
|-style="text-align:center;"! colspan=6| Officer-General to the Navy|-style="text-align:center;"! colspan=6| Commander of the Navy Department
| No. | Portrait | Rank | Name | Took office | Left office | |
|---|---|---|---|---|---|---|
| 11 | Rear Admiral | 1932 | 1933 | |||
| 12 | Captain | 5 August 1933 | 15 December 1933 | |||
| 13 | Admiral | 11 January 1934 | 1 May 1934 | |||
| 14 | Rear Admiral | 1934 | 1938 | |||
| 13 | Admiral | 1938 | 1951 | |||
| 15 | Admiral | 2 July 1951 | 1 December 1951 | |||
| 16 | Admiral of the Fleet | 1951 | 1957 | |||
| 17 | Admiral | 1957 | 1962 | |||
| 18 | Admiral | 1962 | 1964 | |||
| 19 | Admiral | 1964 | 1966 | |||
| 20 | Admiral | 1966 | 1971 | |||
| 21 | Admiral | 1971 | 1972 | |||
| 22 | Admiral | 1972 | 1973 | |||
| 23 | Admiral | 10 October 1973 | 18 November 1973 | |||
| 24 | Admiral | 1973 | 1976 | |||
| 25 | Admiral | 1976 | 1978 | |||
| 26 | Admiral | 1978 | 1980 | |||
| 27 | Admiral | 1981 | 1983 | |||
| 28 | Admiral | 1983 | 1984 | |||
| 29 | Admiral | 1984 | 1986 | |||
| 30 | Admiral | 1986 | 1987 | |||
| 31 | Admiral | 1987 | 1991 | |||
| 32 | Admiral | 1991 | 1993 | |||
| 33 | Admiral | 1993 | 1996 | |||
| 34 | Admiral | 1996 | 1997 | |||
| 35 | Admiral | 1997 | 1998 | |||
| 36 | Admiral | 1998 | 2000 | |||
| 37 | Admiral | 2000 | 2002 | |||
| 38 | Admiral | 2002 | 2003 | |||
| 39 | Admiral | 2003 | 2004 | |||
| 40 | Admiral | 2004 | 2005 | |||
| 41 | Admiral | 2005 | 2008 | |||
| 42 | Admiral | 2008 | 2011 | |||
| 43 | Admiral | 2011 | 2013 | |||
| 44 | Admiral | 2013 | 2014 | |||
| 45 | Admiral | 2014 | 2015 | |||
| 46 | Admiral | 2015 | 2017 | |||
| 47 | Admiral | 2017 | 2018 | |||
| 48 | Admiral | 2018 | 2020 | |||
| 49 | Admiral | 2020 | 2021 | |||
| 50 | Admiral | 2021 | 2022 | |||
| 51 | Admiral | 2022 | 2023 | |||
| 52 | Admiral | 2023 | Incumbent |