Diane Joyce Humetewa , is a United States District Court Judge of the United States District Court in the District of Arizona. Humetewa is the first Native American woman and the first enrolled tribal member to serve as a U.S. federal judge. She previously served as the United States Attorney for the District of Arizona from 2007 to 2009. Humetewa is also a Professor of Practice at Arizona State University's Sandra Day O'Conner School of Law.
Humetewa has served as counsel to the Senate Committee on Indian Affairs and to the Deputy Attorney General for the United States Department of Justice, as a member of the United States Sentencing Guideline Commission, Native American Advisory Committee, and as an Appellate Court Judge for the Hopi Tribe, of which she is an enrolled member.