| th width="25%" align=left>Term | Incumbent | Notes |
| b>French protectorate of Mauritania |
| a href="/encyclopedia/12-May" title="12 May">12 May 1903 to 18 October 1904 | Xavier Coppolani, Commandant |
| b>French civil territory of Mauritania | Incorporated into French West Africa |
| i>18 October 1904 November 1904 | Xavier Coppolani, Commandant |
| ovember 1904 to 12 May 1905 | Xavier Coppolani, Commissioner |
| a href="/encyclopedia/12-May" title="12 May">12 May 1905 to 27 May 1905 | Louis Frrejean, acting Commissioner |
| a href="/encyclopedia/27-May" title="27 May">27 May 1905 to November 1907 | Bernard Laurent Montan-Capdebosq, Commissioner |
| ovember 1907 to 1909 | Henri Joseph Eugne Gouraud, Commissioner |
| a href="/encyclopedia/1909" title="1909">1909 to 1909 | Claudel, acting Commissioner |
| a href="/encyclopedia/1909" title="1909">1909 to 1909 | Aubert, acting Commissioner |
| a href="/encyclopedia/1-January" title="1 January">1 January 1910 to 1 March 1912 | Henri Hippolyte Patey, Commissioner |
| a href="/encyclopedia/1-March" title="1 March">1 March 1912 to April 1914 | Charles Paul Isidore Mouret, Commissioner |
| pril 1914 to 17 November 1916 | Louis Jules Albert Obissier, Commissioner |
| a href="/encyclopedia/17-November" title="17 November">17 November 1916 to 11 December 1920 | Nicolas Jules Henri Gaden, Commissioner |
| a href="/encyclopedia/11-December" title="11 December">11 December 1920 to 9 November 1926 | Nicolas Jules Henri Gaden, Lieutenant Governor |
| a href="/encyclopedia/9-November" title="9 November">9 November 1926 to 13 January 1928 | Albric Auguste Fournier, Lieutenant Governor |
| a href="/encyclopedia/13-January" title="13 January">13 January 1928 to 21 November 1929 | Alphonse Paul Albert Choteau, Lieutenant Governor |
| a href="/encyclopedia/21-November" title="21 November">21 November 1929 to 19 June 1931 | Ren Hctor mile Chazal, Lieutenant Governor |
| a href="/encyclopedia/19-June" title="19 June">19 June 1931 to 22 June 1933 | Gabriel Omer Descemet, acting Lieutenant Governor | 1st Term |
| a href="/encyclopedia/22-June" title="22 June">22 June 1933 to 7 April 1934 | Louis Franois Antonin, acting Lieutenant Governor |
| a href="/encyclopedia/7-April" title="7 April">7 April 1934 to 5 July 1934 | Gabriel Omer Descemet, Lieutenant Governor | 2nd Term |
| a href="/encyclopedia/5-July" title="5 July">5 July 1934 to August 1934 | Adolphe Deitte, Lieutenant Governor |
| ugust 1934 to 1 November 1934 | Jean-Baptiste Victor Chazelas, acting Lieutenant Governor | 1st Term |
| a href="/encyclopedia/1-November" title="1 November">1 November 1934 to 15 April 1935 | Richard Edmond Maurice douard Brunot, Lieutenant Governor |
| a href="/encyclopedia/15-April" title="15 April">15 April 1935 to 10 November 1935 | Jean-Baptiste Victor Chazelas, acting Lieutenant Governor | 2nd Term |
| a href="/encyclopedia/10-November" title="10 November">10 November 1935 to 1 September 1936 | Jules Marcel de Coppet, Lieutenant Governor |
| a href="/encyclopedia/1-September" title="1 September">1 September 1936 to 24 October 1936 | Jean Louis Beyries, acting Lieutenant Governor | 1st Term |
| a href="/encyclopedia/24-October" title="24 October">24 October 1936 to 7 August 1938 | Oswald Durand, Lieutenant Governor |
| a href="/encyclopedia/7-August" title="7 August">7 August 1938 to November 1938 | Charles Andr Dumas, acting Lieutenant Governor |
| ovember 1938 to 28 August 1941 | Jean Louis Beyries, acting Lieutenant Governor | |
| i>28 August 1941 to 4 May 1944 | Jean Louis Beyries, Lieutenant Governor | 2nd Term |
| a href="/encyclopedia/4-May" title="4 May">4 May 1944 to 31 July 1945 | Christian-Robert-Roger Laigret, Lieutenant Governor |
| a href="/encyclopedia/31-July" title="31 July">31 July 1945 to 30 April 1946 | Ren Babin, acting Lieutenant Governor |
| a href="/encyclopedia/30-April" title="30 April">30 April 1946 to 27 October 1946 | Georges Poirier, acting Lieutenant Governor |
| b>Mauritania Overseas Territory of France |
| i>27 October 1946 to 19 July 1947 | Georges Poirier, acting Lieutenant Governor |
| a href="/encyclopedia/19-July" title="19 July">19 July 1947 to 31 December 1947 | Lucien Eugne Geay,acting Lieutenant Governor |
| a href="/encyclopedia/31-December" title="31 December">31 December 1947 to 7 August 1949 | Henry Jean Marie de Mauduit, Lieutenant Governor |
| a href="/encyclopedia/7-August" title="7 August">7 August 1949 to 27 September 1950 | douard Louis Terrac, acting Lieutenant Governor |
| a href="/encyclopedia/27-September" title="27 September">27 September 1950 to 25 April 1952 | Jacques Camille Marie Rogu, Lieutenant Governor |
| a href="/encyclopedia/25-April" title="25 April">25 April 1952 to 23 February 1953 | Pierre Messmer, acting Lieutenant Governor |
| i>23 February 1953 to 6 April 1954 | Pierre Messmer, Lieutenant Governor |
| a href="/encyclopedia/6-April" title="6 April">6 April 1954 to 23 June 1955 | Albert Jean Mouragues, Lieutenant Governor | 1st Term |
| a href="/encyclopedia/23-June" title="23 June">23 June 1955 to 14 May 1956 | Jean Paul Parisot, Lieutenant Governor |
| a href="/encyclopedia/14-May" title="14 May">14 May 1956 to 5 October 1958 | Albert Jean Mouragues, Lieutenant Governor | 2nd Term |
| a href="/encyclopedia/5-October" title="5 October">5 October 1958 to February 1959 | Henri Joseph Marie Bernard, High Commissioner |
| ebruary 1959 to 28 November 1960 | Amde Joseph mile Jean Pierre Anthonioz, High Commissioner |
| a href="/encyclopedia/28-November" title="28 November">28 November 1960 | Independence as 'Islamic Republic of Mauritania' |
For continuation after independence,