The Arizona State Legislature is the state legislature of the U.S. state of Arizona. It is a bicameral legislature that consists of a lower house, the House of Representatives, and an upper house, the Senate. Composed of 90 legislators, the state legislature meets in the Capitol Complex in the state capital of Phoenix. Created by the Arizona Constitution upon statehood in 1912, the Arizona State Legislature met biennially until 1950. Today, they meet annually.

The Arizona State House of Representatives is the lower house of the Arizona Legislature, the state legislature of the U.S. state of Arizona. The upper house is the Senate. The House convenes in the legislative chambers at the Arizona State Capitol in Phoenix. Its members are elected to two-year terms, with a term limit of four consecutive terms. Each of the state's 30 legislative districts elects two state house representatives and one state senator, with each district having a population of at least 203,000.