| Dates of Office | Premier (Colony of New Brunswick | Party | (Born - Died) |
| 01 Nov 1854 - 22 May 1856 | Charles Fisher | Lib | (b. 1808 - d. 1880) |
| 22 May 1856 - 01 Jun 1857 | John Hamilton Gray | Con | (b. 1814 - d. 1889) |
| 01 Jun 1857 - 18 Mar 1861 | Charles Fisher | Lib | (b. 1808 - d. 1880) |
| 18 Mar 1861 - 21 Sep 1865 | Samuel Leonard Tilley | Lib | (b. 1818 - d. 1896) |
| 21 Sep 1865 - 14 Apr 1866 | Albert J. Smith | AC | (b. 1822 - d. 1883) |
| 14 Apr 1866 - 01 Jul 1867 | Peter Mitchell | Cnf | (b. 1824 - d. 1899) |
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| Dates of Office | Premier (Province of New Brunswick) | Party | (Born - Died) |
| 01 Jul 1867 - 16 Aug 1867 | Peter Mitchell | Cnf | (b. 1824 - d. 1899) |
| 16 Aug 1867 - 09 Jun 1870 | Andrew Rainsford Wetmore | Cnf | (b. 1820 - d. 1892) |
| 09 Jun 1870 - 21 Feb 1871 | George Edwin King | Con | (b. 1839 - d. 1901) |
| 21 Feb 1871 - 05 Jul 1872 | George Luther Hatheway | Con | (b. 1813 - d. 1872) |
| 05 Jul 1872 - 03 May 1878 | George Edwin King | Con | (b. 1839 - d. 1901) |
| 03 May 1878 - 25 May 1882 | John James Fraser | Con | (b. 1829 - d. 1896) |
| 25 May 1882 - 03 Mar 1883 | Daniel Lionel Hanington | Con | (b. 1835 - d. 1909) |
| 03 Mar 1883 - 17 Jul 1896 | Andrew George Blair | Lib | (b. 1844 - d. 1907) |
| 17 Jul 1896 - 29 Oct 1897 | James Mitchell | Lib | (b. 1843 - d. 1897) |
| 29 Oct 1897 - 31 Aug 1900 | Henry Robert Emmerson | Lib | (b. 1853 - d. 1914) |
| 31 Aug 1900 - 06 Mar 1907 | Lemuel John Tweedie | Lib | (b. 1849 - d. 1917) |
| 06 Mar 1907 - 31 May 1907 | William Pugsley | Lib | (b. 1850 - d. 1925) |
| 31 May 1907 - 24 Mar 1908 | Clifford William Robinson | Lib | (b. 1866 - d. 1944) |
| 24 Mar 1908 - 16 Oct 1911 | Sir John Douglas Hazen | Con | (b. 1860 - d. 1937) |
| 16 Oct 1911 - 17 Dec 1914 | James Kidd Flemming | Con | (b. 1868 - d. 1927) |
| 17 Dec 1914 - 01 Feb 1917 | George Johnson Clarke | Con | (b. 1857 - d. 1917) |
| 01 Feb 1917 - 04 Apr 1917 | James Alexander Murray | Con | (b. 1864 - d. 1960) |
| 04 Apr 1917 - 28 Feb 1923 | Walter Edward Foster | Lib | (b. 1874 - d. 1947) |
| 28 Feb 1923 - 14 Sep 1925 | Peter John Veniot | Lib | (b. 1863 - d. 1936) |
| 14 Sep 1925 - 19 May 1931 | John Babington Macaulay Baxter | Con | (b. 1868 - d. 1946) |
| 19 May 1931 - 01 Jun 1933 | Charles Dow Richards | Con | (b. 1879 - d. 1956) |
| 01 Jun 1933 - 16 Jul 1935 | Leonard Percy de Wolfe Tilley | Con | (b. 1870 - d. 1947) |
| 16 Jul 1935 - 13 Mar 1940 | A. Allison Dysart | Lib | (b. 1880 - d. 1962) |
| 13 Mar 1940 - 08 Oct 1952 | John Babbitt McNair | Lib | (b. 1889 - d. 1968) |
| 08 Oct 1952 - 12 Jul 1960 | Hugh John Flemming | PC | (b. 1899 - d. 1982) |
| 12 Jul 1960 - 12 Nov 1970 | Louis J. Robichaud | Lib | (b. 1925 - d. 2005) |
| 12 Nov 1970 - 27 Oct 1987 | Richard B. Hatfield | PC | (b. 1931 - d. 1991) |
| 27 Oct 1987 - 13 Oct 1997 | Frank McKenna | Lib | (b. 1948) |
| 13 Oct 1997 - 14 May 1998 | J. Raymond Frenette | Lib | (b. 1935 - d. 2018) |
| 14 May 1998 - 21 Jun 1999 | Camille Thériault | Lib | (b. 1955) |
| 21 Jun 1999 - 03 Oct 2006 | Bernard Lord | PC | (b. 1965) |
| 03 Oct 2006 - 12 Oct 2010 | Shawn Graham | Lib | (b. 1968) |
| 12 Oct 2010 - 07 Oct 2014 | David Alward | PC | (b. 1960) |
| 07 Oct 2014 - 09 Nov 2018 | Brian Gallant | Lib | (b. 1982) |
| 09 Nov 2018 - TBA 2024 | Blaine Higgs | PC | (b. 1954) |
| TBA 2024 - | Susan Holt | Lib | (b. 1977) |
