| Term | Incumbent | Notes |
| align=top|17 February 1900 to 27 November 1901 | valign=top|Benjamin Franklin Tilley, Commandant | 17 April 1900: Tutuila ceded to United States |
| align=top|27 November 1901 to 16 December 1902 | valign=top|Uriel Sebree, Commandant |
| align=top|16 December 1902 to 5 May 1903 | valign=top|Henry Minett, acting Commandant |
| align=top|5 May 1903 to 30 January 1905 | valign=top|Edmund Beardsley Underwood, Commandant | valign=top|16 July 1904: Manu'a ceded to United States |
| align=top|30 January 1905 to 21 May 1908 | valign=top|Charles Brainard Taylor Moore, Governor |
| align=top|21 May 1908 to 10 November 1910 | valign=top|John Frederick Parker, Governor |
| align=top|10 November 1910 to 14 March 1913 | valign=top|William Michael Crose, Governor | valign=top|17 July 1911: U.S. Naval Station Tutuila renamed American Samoa |
| align=top|14 March 1913 to 14 July 1913 | valign=top|Nathan Woodworth Post, acting Governor | 1st Term |
| align=top|14 July 1913 to 2 October 1914 | valign=top|Clark Daniel Stearns, Governor |
| align=top|2 October 1914 to 6 December 1914 | valign=top|Nathan Woodworth Post, acting Governor | 2nd Term |
| align=top|6 December 1914 to 1 March 1915 | valign=top|Charles Armijo Woodruff, acting Governor |
| align=top|1 March 1915 to 10 June 1919 | valign=top|John Martin Poyer, Governor |
| align=top|10 June 1919 to 3 November 1920 | valign=top|Warren Jay Terhune, Governor |
| align=top|11 November 1920 to 1 March 1922 | valign=top|Waldo A. Evans, Governor |
| align=top|1 March 1922 to 4 September 1923 | valign=top|Edwin Taylor Pollock, Governor |
| align=top|4 September 1923 to 17 March 1925 | valign=top|Edward Stanley Kellogg, Governor |
| align=top|17 March 1925 to 9 September 1927 | valign=top|Henry Francis Bryan, Governor |
| align=top|9 September 1927 to 2 August 1929 | valign=top|Stephen Victor Graham, Governor | valign=top|20 February 1929: U.S. Congress recognition of the cession of Tutuila and Manu'a by their chiefs, with retrospective to 16 July 1904 |
| align=top|2 August 1929 to 24 March 1931 | valign=top|Gatewood Sanders Lincoln, Governor | 1st Term |
| align=top|24 March 1931 to 22 April 1931 | valign=top|James Sutherland Spore acting Governor |
| align=top|22 April 1931 to 17 July 1931 | valign=top|Arthur Tenney Emerson, acting Governor |
| align=top|17 July 1931 to 12 May 1932 | valign=top|Gatewood Sanders Lincoln, Governor | 2nd Term |
| align=top|12 May 1932 to 10 April 1934 | valign=top|George Bertram Landenberger, Governor |
| align=top|10 April 1934 to 17 April 1934 | valign=top|Thomas Calloway Latimore, acting Governor |
| align=top|17 April 1934 to 15 January 1936 | valign=top|Otto Carl Dowling, Governor |
| align=top|15 January 1936 to 20 January 1936 | valign=top|Thomas Benjamin Fitzpatrick, acting Governor |
| align=top|20 January 1936 to 3 June 1938 | valign=top|MacGillivray Milne, Governor |
| align=top|26 June 1938 to 30 July 1940 | valign=top|Edward William Hanson, Governor |
| align=top|30 July 1940 to 8 August 1940 | valign=top|Jesse Rink Wallace, acting Governor |
| align=top|8 August 1940 to 5 June 1942 | valign=top|Laurence Wild, Governor |
| align=top|17 January 1942 to 25 April 1942 | valign=top|Henry L. Larsen, Military Governor |
| align=top|5 June 1942 to 8 February 1944 | valign=top|John Gould Moyer, Governor |
| align=top|8 February 1944 to 27 January 1945 | valign=top|Allen Hobbs, Governor |
| align=top|27 January 1945 to 3 September 1945 | valign=top|Ralph Waldo Hungerford, Governor |
| align=top|3 September 1945 to 10 September 1945 | valign=top|Samuel Wakefield Canan, acting Governor |
| align=top|10 September 1945 to 22 April 1947 | valign=top|Harold Alexander Houser, Governor |
| align=top|22 April 1947 to 15 June 1949 | valign=top|Vernon Huber, Governor |
| align=top|7 July 1949 to 23 February 1951 | valign=top|Thomas Francis Darden, Jr., Governor |
| align=top|23 February 1951 to 20 June 1952 | valign=top|Phelps Phelps, Governor |
| align=top|16 July 1952 to 23 November 1952 | valign=top|John C. Elliott, Governor |
| align=top|28 November 1952 to 4 March 1953 | valign=top|James Arthur Ewing, Governor |
| align=top|4 March 1953 to 5 August 1953 | valign=top|Lawrence M. Judd, Governor |
| align=top|1 October 1953 to 15 October 1956 | valign=top|Richard Barrett Lowe, Governor |
| align=top|15 October 1956 to 24 May 1961 | valign=top|Peter Tali Coleman, Governor | 1st Term |
| align=top|24 May 1961 to 31 July 1967 | valign=top|Hyrum Rex Lee, Governor | 1st Term |
| align=top|1 August 1967 to 31 July 1969 | valign=top|Owen Stuart Aspinall, Governor |
| align=top|1 August 1969 to 14 October 1974 | valign=top|John Morse Haydon, Governor |
| align=top|15 October 1974 to 6 February 1975 | valign=top|Frank C. Mockler, acting Governor |
| align=top|6 February 1975 to 30 September 1976 | valign=top|Earl B. Ruth, Governor |
| align=top|1 October 1976 to 27 May 1977 | valign=top|Frank Barnett, Governor |
| align=top|28 May 1977 to 3 January 1978 | valign=top|Hyrum Rex Lee, Governor | 2nd Term |
| align=top|3 January 1978 to 3 January 1985 | valign=top|Peter Tali Coleman, Governor | 2nd and 3rd Terms; Republican |
| align=top|3 January 1985 to 2 January 1989 | valign=top|A.P. Lutali, Governor | 1st Term; Democrat |
| align=top|2 January 1989 to 3 January 1993 | valign=top|Peter Tali Coleman, Governor | 4th Term; Republican |
| align=top|3 January 1993 to 3 January 1997 | valign=top|A.P. Lutali, Governor | 2nd Term; Democrat |
| align=top|3 January 1997 to 26 March 2003 | valign=top|Tauese P. Sunia, Governor | Democrat |
| align=top|26 March 2003 to 7 April 2003 | valign=top|Togiola Tulafono, acting Governor | Democrat |
| align=top|7 April 2003 to present | valign=top|Togiola Tulafono, Governor | Democrat |
American Samoa