The Arizona State Senate is part of the Arizona Legislature, the state legislature of the US state of Arizona. The Senate consists of 30 members each representing an average of 219,859 constituents. Members serve two-year terms with term limits that limit Senators to a maximum four consecutive terms before requiring a one-term respite prior to running again. Members of the Republican Party are currently the majority in the Senate. There are currently 16 women serving in the Senate after Raquel Terán was appointed, making it the first time a majority of the body was composed of female members.

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.