The 45th Arizona State Legislature, consisting of the Arizona State Senate and the Arizona House of Representatives, was constituted in Phoenix from January 1, 2001, to December 31, 2002, during the final two years of Jane Dee Hull's first full term in office.

The Republicans lost a seat in the Senate, creating a 15-15 balance with the Democrats.

The Republicans lost four seats in the House, maintaining their majority in the lower chamber, 36–24.

The Legislature met for two regular sessions at the State Capitol in Phoenix.

[1]: i [2]: i There were six Special Sessions, the first of which was convened on September 24, 2001, and adjourned on September 26;[3]: 2405  the second convened on November 13, 2001, and adjourned sine die on December 19;[4]: 1937  the third convened on February 4, 2002, and adjourned sine die March 20;[4]: 2087  the fourth convened on April 1, 2002, and adjourned sine die on May 23;[4]: 2145  the fifth convened on July 30, 2002, and adjourned sine die August 1;[4]: 2149  the sixth and final special session convened and adjourned on November 25, 2002.