| Member | Party | Years | District | Electoral history |
| Nehemiah Abbott | Republican | – March 3, 1859 | | Elected in 1856. Retired. |
| Amos L. Allen | Republican | – March 3, 1911 | | Elected to finish Reed's term. Retired but died before next term. |
| Elisha Hunt Allen | Whig | – March 3, 1843 | | Elected in 1840. Redistricted to the and lost re-election to Hamlin. |
| Tom Allen | Democratic | – January 3, 2009 | | Elected in 1996. Retired to run for U.S. Senator. |
| Hugh J. Anderson | Democratic | – March 3, 1841 | | Elected in 1836. Retired. |
| John Anderson | Jacksonian | – March 3, 1833 | | Elected in 1824. Retired to run for Mayor of Portland. |
| Charles Andrews | Democratic | – April 30, 1852 | | Elected in 1850. Died. |
| Tom Andrews | Democratic | – January 3, 1995 | | Elected in 1990. Retired to run for U.S. Senator. |
| John Appleton | Democratic | – March 3, 1853 | | Elected in 1850. Retired. |
| Jeremiah Bailey | Anti-Jacksonian | – March 4, 1837 | | Elected in 1834. Lost re-election to Cilley. |
| John Baldacci | Democratic | – January 3, 2003 | | Elected in 1994. Retired to run for governor. |
| James Bates | Jacksonian | – March 3, 1833 | | Elected in 1830. Retired. |
| Carroll L. Beedy | Republican | – January 3, 1935 | | Elected in 1920. Lost re-election to S. Hamlin. |
| Hiram Belcher | Whig | – March 3, 1849 | | Elected in 1846. Retired. |
| Samuel P. Benson | Whig | – March 3, 1855 | | Elected in 1852. Switched parties. |
| Samuel P. Benson | Opposition | – March 3, 1857 | | Re-elected in 1854 as an Opposition Party candidate. Retired. |
| James G. Blaine | Republican | – July 10, 1876 | | Elected in 1862. Resigned when appointed U.S. Senator. |
| Charles A. Boutelle | Republican | – March 3, 1885 | | Elected in 1882. Redistricted to the. |
| Charles A. Boutelle | Republican | – March 3, 1901 | | Redistricted from the and re-elected in 1884. Re-elected but resigned before next term. |
| Joseph E. Brennan | Democratic | – January 3, 1991 | | Elected in 1986. Retired to run for governor. |
| Owen Brewster | Republican | – January 3, 1941 | | Elected in 1934. Retired to run for U.S. Senator. |
| David Bronson | Whig | – March 3, 1843 | | Elected to finish Evans's term. Retired. |
| Edwin C. Burleigh | Republican | – March 3, 1911 | | Elected to finish Milliken's term. Lost re-election to Gould. |
| John H. Burleigh | Republican | – March 3, 1877 | | Elected in 1872. Lost renomination to T. Reed. |
| William Burleigh | Democratic-Republican | – March 3, 1825 | | Elected in 1823. Switched parties. |
| William Burleigh | Anti-Jacksonian | – July 2, 1827 | | Re-elected in 1824 as an Anti-Jacksonian. Died. |
| Samuel Butman | Anti-Jacksonian | – March 3, 1831 | | Elected in 1827. Retired. |
| Timothy J. Carter | Democratic | – March 14, 1838 | | Elected in 1836. Died. |
| Shepard Cary | Democratic | – March 3, 1845 | | Elected in 1843. Retired. |
| Jonathan Cilley | Democratic | – February 24, 1838 | | Elected in 1836. Died. |
| Asa Clapp | Democratic | – March 3, 1849 | | Elected in 1846. Retired. |
| Franklin Clark | Democratic | – March 3, 1849 | | Elected in 1846. Retired. |
| Nathan Clifford | Democratic | – March 3, 1843 | | Elected in 1838. Retired. |
| Stephen Coburn | Republican | – March 3, 1861 | | Elected to finish Washburn's term. Retired. |
| Frank M. Coffin | Democratic | – January 3, 1961 | | Elected in 1956. Retired to run for governor. |
| William Cohen | Republican | – January 3, 1979 | | Elected in 1972. Retired to run for U.S. Senator. |
| Joshua Cushman | Democratic-Republican | – March 3, 1823 | | Redistricted from and re-elected in 1820. Redistricted to the. |
| Joshua Cushman | Democratic-Republican | – March 3, 1825 | | Redistricted from the and re-elected in 1823. Lost re-election to Sprague. |
| Joseph Dane | Federalist | – March 3, 1821 | | Elected finish John Holmes's term. Redistricted to the. |
| Joseph Dane | Federalist | – March 3, 1823 | | Redistricted from the and re-elected in 1820. Retired. |
| Thomas Davee | Democratic | – March 3, 1841 | | Elected in 1836. Retired. |
| Nelson Dingley Jr. | Republican | – March 3, 1883 | | Elected to finish Frye's term. Redistricted to the. |
| Nelson Dingley Jr. | Republican | – March 3, 1885 | | Redistricted from the and re-elected in 1882. Redistricted to the. |
| Nelson Dingley Jr. | Republican | – January 13, 1899 | | Redistricted from the and re-elected in 1884. Re-elected but died before next term. |
| Robert P. Dunlap | Democratic | – March 3, 1847 | | Elected in 1843. Retired. |
| David F. Emery | Republican | – January 3, 1983 | | Elected in 1974. Retired to run for U.S. Senator. |
| George Evans | Anti-Jacksonian | – March 3, 1837 | | Elected to finish Sprague's term. Switched parties. |
| George Evans | Whig | – March 3, 1841 | | Re-elected in 1836 as a Whig. Re-elected but resigned when elected U.S. Senator. |
| John Fairfield | Jacksonian | – December 24, 1838 | | Elected in 1834. Retired to run for governor and resigned when elected. |
| E. Wilder Farley | Whig | – March 3, 1855 | | Elected in 1852. Lost re-election to Knowlton. |
| Frank Fellows | Republican | – August 27, 1951 | | Elected in 1940. Died. |
| Samuel C. Fessenden | Republican | – March 3, 1863 | | Elected in 1860. Retired. |
| Thomas Fessenden | Republican | – March 3, 1863 | | Elected to finish Walton's term. Retired. |
| William P. Fessenden | Whig | – March 3, 1843 | | Elected in 1840. Retired. |
| Edwin Flye | Republican | – March 3, 1877 | | Elected to finish Blaine's term. Retired. |
| Stephen Clark Foster | Republican | – March 3, 1861 | | Elected in 1856. Retired. |
| Ezra B. French | Republican | – March 3, 1861 | | Elected in 1858. Retired. |
| William P. Frye | Republican | – March 17, 1881 | | Elected in 1870. Resigned when elected U.S. senator. |
| Thomas J. D. Fuller | Democratic | – March 3, 1853 | | Elected in 1848. Redistricted to the. |
| Thomas J. D. Fuller | Democratic | – March 3, 1857 | | Redistricted from the and re-elected in 1852. Retired. |
| Peter A. Garland | Republican | – January 3, 1963 | | Elected in 1960. Lost renomination to Tupper. |
| Elbridge Gerry | Democratic | – March 3, 1851 | | Elected in 1848. Retired. |
| Charles J. Gilman | Republican | – March 3, 1859 | | Elected in 1856. Retired. |
| Jared Golden | Democratic | – present | | Elected in 2018. Incumbent. |
| Louis B. Goodall | Republican | – March 3, 1921 | | Elected in 1916. Retired. |
| Robert Goodenow | Whig | – March 3, 1853 | | Elected in 1850. Lost renomination to Farley. |
| Rufus K. Goodenow | Whig | – March 3, 1851 | | Elected in 1848. Retired. |
| Forrest Goodwin | Republican | – May 28, 1913 | | Elected in 1912. Died. |
| John Noble Goodwin | Republican | – March 3, 1863 | | Elected in 1860. Lost re-election to Sweat. |
| Samuel Wadsworth Gould | Democratic | – March 3, 1913 | | Elected in 1910. Lost re-election to F. Goodwin. |
| Frank E. Guernsey | Republican | – March 3, 1917 | | Elected to finish Powers's term. Retired to run for U.S. senator. |
| Eugene Hale | Republican | – March 3, 1879 | | Elected in 1868. Lost re-election to Murch. |
| Robert Hale | Republican | – January 3, 1959 | | Elected in 1942. Lost re-election to Oliver. |
| Joseph Hall | Jacksonian | – March 3, 1837 | | Elected in 1833. Retired. |
| Hannibal Hamlin | Democratic | – March 3, 1847 | | Elected in 1843. Retired to run for U.S. senator. |
| Simon M. Hamlin | Democratic | – January 3, 1937 | | Elected in 1934. Lost re-election to Oliver. |
| David Hammons | Democratic | – March 3, 1849 | | Elected in 1846. Retired. |
| Mark Harris | Democratic-Republican | – March 3, 1823 | | Elected to finish Whitman's term. Retired. |
| William Hathaway | Democratic | – January 3, 1973 | | Elected in 1964. Retired to run for U.S. Senator. |
| Ebenezer Herrick | Democratic-Republican | – March 3, 1823 | | Elected in 1821. Redistricted to the. |
| Ebenezer Herrick | Democratic-Republican | – March 3, 1825 | | Redistricted from the and re-elected in 1823. Switched parties. |
| Ebenezer Herrick | Anti-Jacksonian | – March 3, 1827 | | Re-elected in 1825 as an Anti-Jacksonian. Retired. |
| Joshua Herrick | Democratic | – March 3, 1845 | | Elected in 1843. Lost renomination to Scamman. |
| Ira G. Hersey | Republican | – March 3, 1929 | | Elected in 1916. Lost renomination to Snow. |
| Samuel F. Hersey | Republican | – February 3, 1875 | | Elected in 1872. Re-elected but died before next term. |
| Mark Langdon Hill | Democratic-Republican | – March 3, 1823 | | Redistricted from and re-elected in 1821. Lost re-election to E. Herrick. |
| Asher Hinds | Republican | – March 3, 1917 | | Elected in 1910. Retired. |
| Cornelius Holland | Jacksonian | – March 3, 1833 | | Elected to finish Ripley's term. Retired. |
| Leonard Jarvis | Jacksonian | – March 3, 1833 | | Elected in 1830. Redistricted to the. |
| Leonard Jarvis | Jacksonian | – March 3, 1837 | | Redistricted from the and Re-elected in 1833. Retired. |
| Edward Kavanagh | Jacksonian | – March 3, 1835 | | Elected in 1830. Lost re-election to Bailey. |
| David Kidder | Democratic-Republican | – March 3, 1825 | | Elected in 1823. Switched parties. |
| David Kidder | Anti-Jacksonian | – March 3, 1827 | | Re-elected in 1824 as an Anti-Jacksonian. Retired. |
| Ebenezer Knowlton | Opposition | – March 3, 1857 | | Elected in 1854. Retired. |
| Peter Kyros | Democratic | – January 3, 1975 | | Elected in 1966. Lost re-election to Emery. |
| George W. Ladd | Greenback | – March 3, 1883 | | Elected in 1878. Redistricted to the and lost re-election to four others. |
| Enoch Lincoln | Democratic-Republican | – March 3, 1823 | | Redistricted from and re-elected in 1820. Redistricted to the. |
| Enoch Lincoln | Democratic-Republican | – March 3, 1825 | | Redistricted from the and re-elected in 1823. Switched parties. |
| Enoch Lincoln | Anti-Jacksonian | – 1826 | | Re-elected in 1824 as an Anti-Jacksonian. Resigned. |
| Stephen Lindsey | Republican | – March 3, 1883 | | Elected in 1876. Retired. |
| Charles E. Littlefield | Republican | – September 30, 1908 | | Elected to finish Dingley's term. Resigned. |
| Nathaniel Littlefield | Democratic | – March 3, 1843 | | Elected in 1840. Retired. |
| Nathaniel Littlefield | Democratic | – March 3, 1851 | | Elected in 1848. Retired. |
| Stephen Longfellow | Federalist | – March 3, 1825 | | Elected in 1823. Lost re-election to J. Anderson. |
| James B. Longley Jr. | Republican | – January 3, 1997 | | Elected in 1994. Lost re-election to T. Allen. |
| Joshua A. Lowell | Democratic | – March 3, 1843 | | Elected in 1838. Retired. |
| John Lynch | Republican | – March 3, 1873 | | Elected in 1864. Retired. |
| Moses Macdonald | Democratic | – March 3, 1855 | | Elected in 1850. Retired. |
| Alfred Marshall | Democratic | – March 3, 1843 | | Elected in 1840. Retired. |
| Moses Mason Jr. | Jacksonian | – March 3, 1837 | | Elected in 1833. Retired. |
| Samuel Mayall | Democratic | – March 3, 1855 | | Elected in 1852. Retired. |
| John D. McCrate | Democratic | – March 3, 1847 | | Elected in 1844. Retired. |
| Daniel J. McGillicuddy | Democratic | – March 3, 1917 | | Elected in 1910. Lost re-election to W. White Jr. |
| Clifford McIntire | Republican | – January 3, 1963 | | Elected to finish Fellows's term. Redistricted to the. |
| Clifford McIntire | Republican | – January 3, 1965 | | Redistricted from the and re-elected in 1962. Retired to run for U.S. Senator. |
| Rufus McIntire | Jacksonian | – March 3, 1835 | | Elected to finish Burleigh's term. Retired. |
| John R. McKernan Jr. | Republican | – January 3, 1987 | | Elected in 1982. Retired to run for governor. |
| Mike Michaud | Democratic | – January 3, 2015 | | Elected in 2002. Retired to run for governor. |
| Seth L. Milliken | Republican | – March 3, 1885 | | Elected in 1882. Redistricted to the. |
| Seth L. Milliken | Republican | – April 18, 1897 | | Redistricted from the and re-elected in 1884. Died. |
| Edward C. Moran Jr. | Democratic | – January 3, 1937 | | Elected in 1932. Retired. |
| Anson Morrill | Republican | – March 3, 1863 | | Elected in 1860. Retired. |
| Samuel P. Morrill | Republican | – March 3, 1871 | | Elected in 1868. Lost renomination to Frye. |
| Freeman H. Morse | Whig | – March 3, 1845 | | Elected in 1843. Retired. |
| Freeman H. Morse | Republican | – March 3, 1861 | | Elected in 1856. Retired. |
| Thompson H. Murch | Greenback | – March 3, 1883 | | Elected in 1878. Redistricted to the and lost re-election to four others. |
| Charles P. Nelson | Republican | – January 3, 1957 | | Elected in 1948. Retired. |
| John E. Nelson | Republican | – March 3, 1933 | | Elected to finish Peters's term. Lost re-election to Utterback. |
| Joseph C. Noyes | Whig | – March 3, 1839 | | Elected in 1836. Lost re-election to Lowell. |
| Jeremiah O'Brien | Democratic-Republican | – March 3, 1825 | | Elected in 1823. Switched parties. |
| Jeremiah O'Brien | Anti-Jacksonian | – March 3, 1829 | | Re-elected in 1824 as an Anti-Jacksonian. Lost re-election to Jarvis. |
| James C. Oliver | Republican | – January 3, 1943 | | Elected in 1936. Lost renomination to R. Hale. |
| James C. Oliver | Democratic | – January 3, 1961 | | Elected in 1958. Lost re-election to Garland. |
| John Otis | Whig | – March 3, 1851 | | Elected in 1848. Retired. |
| Gorham Parks | Jacksonian | – March 3, 1837 | | Elected in 1833. Retired to run for governor. |
| Virgil D. Parris | Democratic | – March 3, 1841 | | Elected to finish Carter's term. Lost renomination to Littlefield. |
| Donald B. Partridge | Republican | – March 3, 1933 | | Elected in 1930. Retired. |
| Sidney Perham | Republican | – March 3, 1869 | | Elected in 1862. Retired. |
| John J. Perry | Opposition | – March 3, 1857 | | Elected in 1854. Retired. |
| John J. Perry | Republican | – March 3, 1861 | | Elected in 1858. Retired. |
| John A. Peters | Republican | – March 3, 1873 | | Elected in 1866. Retired. |
| John A. Peters | Republican | – January 2, 1922 | | Elected to finish Goodwin's term. Resigned to become Judge of the United States District Court for the District of Maine. |
| Frederick A. Pike | Republican | – March 3, 1863 | | Elected in 1860. Redistricted to the. |
| Frederick A. Pike | Republican | – March 3, 1869 | | Redistricted from the and re-elected in 1862. Lost renomination to E. Hale. |
| Chellie Pingree | Democratic | – present | | Elected in 2008. Incumbent. |
| Harris M. Plaisted | Republican | – March 3, 1877 | | Elected to finish Hersey's term. Retired. |
| Bruce Poliquin | Republican | – January 3, 2019 | | Elected in 2014. Lost re-election to Golden. |
| Llewellyn Powers | Republican | – March 3, 1879 | | Elected in 1876. Lost re-election to Ladd. |
| Llewellyn Powers | Republican | – July 28, 1908 | | Elected to finish Boutelle's term. Died. |
| Benjamin Randall | Whig | – March 3, 1843 | | Elected in 1838. Retired. |
| Isaac Reed | Whig | – March 3, 1853 | | Elected to finish Andrews's term. Retired. |
| Thomas Brackett Reed | Republican | – March 3, 1883 | | Elected in 1876. Redistricted to the. |
| Thomas Brackett Reed | Republican | – March 3, 1885 | | Redistricted from the and Re-elected in 1882. Redistricted to the. |
| Thomas Brackett Reed | Republican | – September 4, 1899 | | Redistricted from the and re-elected in 1884. Resigned to protest the Spanish–American War. |
| John H. Rice | Republican | – March 3, 1863 | | Elected in 1860. Redistricted to the. |
| John H. Rice | Republican | – March 3, 1867 | | Redistricted from the and re-elected in 1862. Retired. |
| James W. Ripley | Jacksonian | – March 12, 1830 | | Elected to finish Lincoln's term Resigned. |
| Edward Robinson | Whig | – March 3, 1839 | | Elected to finish Cilley's term. Retired. |
| Cullen Sawtelle | Democratic | – March 3, 1847 | | Elected in 1844. Retired. |
| Cullen Sawtelle | Democratic | – March 3, 1851 | | Elected in 1848. Retired. |
| John Fairfield Scamman | Democratic | – March 3, 1847 | | Elected in 1844. Retired. |
| Luther Severance | Whig | – March 3, 1847 | | Elected in 1843. Retired. |
| Ephraim K. Smart | Democratic | – March 3, 1849 | | Elected in 1846. Retired. |
| Ephraim K. Smart | Democratic | – March 3, 1853 | | Elected in 1850. Lost re-election to Washburn. |
| Albert Smith | Democratic | – March 3, 1841 | | Elected in 1838. Lost re-election to W. Fessenden. |
| Clyde H. Smith | Republican | – April 8, 1940 | | Elected in 1936. Died. |
| Francis Smith | Jacksonian | – March 3, 1837 | | Elected in 1833. Switched parties. |
| Francis Smith | Democratic | – March 3, 1839 | | Re-elected in 1836 as a Democrat. Lost re-election to A. Smith. |
| Margaret Chase Smith | Republican | – January 3, 1949 | | Elected to finish her husband's term. Retired to run for U.S. Senator. |
| Donald F. Snow | Republican | – March 3, 1933 | | Elected in 1928. Redistricted to the and lost renomination to Brewster. |
| Olympia Snowe | Republican | – January 3, 1995 | | Elected in 1978. Retired to run for U.S. Senator. |
| Daniel E. Somes | Republican | – March 3, 1861 | | Elected in 1858. Retired. |
| Peleg Sprague | Anti-Jacksonian | – March 3, 1829 | | Elected in 1825. Re-elected but resigned when elected U.S. senator. |
| Charles Stetson | Democratic | – March 3, 1851 | | Elected in 1848. Lost renomination. |
| John P. Swasey | Republican | – March 3, 1911 | | Elected to finish Littlefield's term. Lost re-election to McGillicuddy. |
| Lorenzo De Medici Sweat | Democratic | – March 3, 1865 | | Elected in 1862. Lost re-election to Lynch. |
| Stanley R. Tupper | Republican | – January 3, 1963 | | Elected in 1960. Redistricted to the. |
| Stanley R. Tupper | Republican | – January 3, 1967 | | Redistricted from the and re-elected in 1962. Retired. |
| John G. Utterback | Democratic | – January 3, 1935 | | Elected in 1932. Lost re-election to Brewster. |
| Charles W. Walton | Republican | – May 26, 1862 | | Elected in 1860. Resigned to become Associate Justice of the Maine Supreme Judicial Court. |
| Israel Washburn Jr. | Whig | – March 3, 1853 | | Elected in 1850. Redistricted to the. |
| Israel Washburn Jr. | Whig | – March 3, 1855 | | Redistricted from the and re-elected in 1852. Switched parties. |
| Israel Washburn Jr. | Republican | – January 1, 1861 | | Re-elected in 1854 as a Republican. Retired to run for governor and resigned when elected. |
| Benjamin White | Democratic | – March 3, 1845 | | Elected in 1843. Retired. |
| Wallace H. White Jr. | Republican | – March 3, 1931 | | Elected in 1916. Retired to run for U.S. Senator. |
| Ezekiel Whitman | Federalist | – June 1, 1822 | | Redistricted from the and re-elected in 1820. Resigned. |
| James S. Wiley | Democratic | – March 3, 1849 | | Elected in 1846. Retired. |
| Hezekiah Williams | Democratic | – March 3, 1849 | | Elected in 1844. Retired. |
| William D. Williamson | Democratic-Republican | – March 3, 1823 | | Redistricted from the and re-elected in 1821. Redistricted to the and lost re-election to Kidder. |
| Joseph F. Wingate | Anti-Jacksonian | – March 3, 1831 | | Elected in 1826. Retired. |
| John M. Wood | Republican | – March 3, 1859 | | Elected in 1854. Retired. |