The legislature of the U.S. state of Louisiana has convened many times since statehood became effective on April 30, 1812. "The legislature was elected every two years until 1880, when a sitting legislature was elected every four years thereafter."
| Louisiana State Constitution of 1812 | |||
| July 1812 | 1814 | 1812 | |
| November 1814 | 1816 | 1814 | |
| November 1817 | 1818 | 1816 | |
| January 1819 | 1820 | 1820 | |
| November 1821 | 1822 | 1822 | |
| January 1823 | 1824 | 1824 | |
| November 1824 | 1826 | 1826 | |
| January 1827 | 1828 | 1828 | |
| December 1828 | 1830 | 1830 | |
| January 1831 | 1832 | 1832 | |
| January 1833 | 1834 | 1834 | |
| January 1835 | 1836 | 1836 | |
| January 1837 | 1838 | 1838 | |
| January 1839 | 1840 | 1840 | |
| January 1841 | 1842 | 1842 | |
| January 1843 | 1844 | 1844 | |
| January 1845 | 1845 | 1845 | |
| Louisiana State Constitution of 1845 | |||
| February 1846 | 1847 | 1847 | |
| January 1848 | 1848 | 1848 | |
| January 1850 | 1850 | 1850 | |
| January 1852 | 1852 | 1852 | |
| Louisiana State Constitution of 1852 | |||
| January 1853 | 1853 | 1853 | |
| January 1854 | 1855 | 1855 | |
| January 1856 | 1857 | 1857 | |
| January 1858 | 1859 | 1859 | |
| January 1860 | 1861 | 1861 | |
| November 1861 | 1863 | 1863 | |
| January 1864 | 1865 | 1865 | |
| Louisiana State Constitution of 1864 | |||
| October 1864 | 1865 | 1865 | |
| January 1866 | 1867 | 1867 | |
| Louisiana State Constitution of 1868 | |||
| June 1868 | 1870 | 1870 | |
| January 1871 | 1872 | 1872 | |
| January 1873 | 1874 | 1874 | |
| January 1875 | 1876 | 1876 | |
| January 1877 | 1878 | 1878 | |
| January 1879 | 1879 | 1879 | |
| Louisiana State Constitution of 1879 | |||
| January 1880 | 1883 | 1883 | |
| May 1884 | 1886 | 1886 | |
| May 1888 | 1890 | 1890 | |
| May 1892 | 1895 | 1895 | |
| May 1896 | 1899 | 1900 | |
| Louisiana State Constitution of 1898 | |||
| May 1900 | 1904 | 1904 | |
| May 1904 | 1908 | 1908 | |
| May 1908 | 1912 | 1912 | |
| May 1912 | 1916 | 1916 | |
| Louisiana State Constitution of 1913 | |||
| May 1916 | 1920 | 1920 | |
| May 1920 | 1924 | 1924 | |
| Louisiana State Constitution of 1921 | |||
| May 1924 | 1928 | 1928 | |
| May 1928 | 1932 | 1932 | |
| May 1932 | 1936 | 1936 | |
| May 1936 | 1940 | 1940 | |
| January 1940 | 1944 | 1944 | |
| May 1944 | 1948 | 1948 | |
| May 1948 | 1952 | 1952 | |
| May 1952 | 1956 | 1956 | |
| May 1956 | 1960 | ||
| May 1960 | 1964 | 1964 | |
| May 1964 | 1968 | 1968 | |
| May 1968 | 1972 | 1972 | |
| May 1972 | 1976 | 1976 | |
| Louisiana State Constitution of 1974 | |||
| May 1976 | 1980 | 1980 | |
| April 1980 | 1984 | 1984 | |
| March 1984 | November 1983 | ||
| March 1988 | 1992 | November 1987 | |
| January 1992 | 1996 | November 1991 | |
| January 1996 | 2000 | November 1995 | |
| January 2000 | 2004 | November 1999 | |
| January 2004 | 2008 | November 2003 | |
| January 2008 | 2012 | November 2007 | |
| January 2012 | 2016 | November 19, 2011 | |
| 71st Louisiana Legislature | January 11, 2016 | 2020 | November 21, 2015 |
| January 13, 2020 | 2024 | November 16, 2019 | |
| 73rd Louisiana Legislature | January 2024 | 2028 | November 18, 2023[1] |