The 2006 Arizona gubernatorial election was held on November 7, 2006. Incumbent Governor Janet Napolitano was reelected in a landslide. Napolitano's widespread popularity contributed to her easy reelection; her general approval rating in October 2006, one month before the election, was at 58%.

Janet Ann Napolitano is an American politician, lawyer, and academic administrator. She served as president of the University of California from 2013 to 2020, on the faculty at the Goldman School of Public Policy at the University of California, Berkeley since 2015, the United States secretary of homeland security from 2009 to 2013, and the governor of Arizona from 2003 to 2009.