The Legislative Assembly of Quebec was the name of the lower house of Quebec's legislature until 1968, when it was renamed the National Assembly. At the same time, the upper house of the legislature, the Legislative Council, was abolished. Both were initially created by the Constitutional Act of 1791.

It was the Union Nationale government of Premier Jean-Jacques Bertrand that passed the "Bill 90" legislation to do so, although earlier unsuccessful attempts had been made by earlier governments.

Today Quebec has a unicameral legislature known as the National Assembly.

The large chamber housing the assembly is also known as le salon bleu (the blue hall) because of the predominance of this color on the walls. It used to be known as le salon vert (the green hall) until 1978, when the color was changed to suit televising of parliamentary debates.