A legislative council is the name given to the legislature, or one of the legislative chambers of a nation, colony, or subnational division such as a province or state; or, in the United States, a council within a legislature which supervises nonpartisan legislative support staff. A member of a legislative council is commonly referred to as an MLC.
In the British Empire, the authority under which legislative councils have been constituted has varied: some under the prerogative, others by act of parliament, and some by commission and royal instructions. Many are or were the upper house in a bicameral legislature and many had members who were appointed, not elected.
In American English, the term "legislative council" has acquired a slightly different meaning since the 1930s. Today, it refers to a joint committee with members from both houses of the state legislature, which supervises a staff of attorneys, accountants, and researchers charged with providing strictly nonpartisan support services to the legislature or to particular committees. The concept of the legislative council was first developed in Kansas and was implemented by the Kansas Legislature in 1933. Eventually, a majority of U.S. states adopted legislative councils, but under a variety of names. Kansas still uses a legislative council, although it was converted into the Kansas Legislative Coordinating Council in 1971. Today, legislative councils actually operating under that name exist in the states of Arkansas, Arizona, Colorado, Montana, North Dakota, Texas, and Wisconsin. Several states prefer to use the term "commission" for the same thing, including New Jersey and Nevada.
A few states, like California, have a "legislative counsel," not "council," who is appointed by a vote of the entire legislature and is thus responsible to the body as a whole rather than a "council" within it.