Sandra Day O'Connor United States Courthouse, Federal courthouse in Phoenix, United States.

The Sandra Day O'Connor United States Courthouse is a six-story federal courthouse in Phoenix, Arizona. The structure combines glass and concrete, featuring a special proceedings courtroom with a glass-lens ceiling and multiple judicial chambers.

The courthouse opened in 2000 as the new home for the United States District Court of Arizona. Its construction marked an important step in meeting the growing legal needs of the state.

The courthouse is named after Sandra Day O'Connor, the first woman to serve as an Associate Justice of the U.S. Supreme Court, from 1981 to 2006; Congress enacted the naming in Pub. L. 106-166. Visitors can look for the drum-shaped special-proceedings courtroom in the public atrium, whose glass-lens ceiling was made by light artist James Carpenter.

The complex is open to visitors on weekdays but requires security screening at the entrance. There is no public parking directly on the premises, so visitors should use nearby parking options.

The northern facade features a six-story glass curtain wall that illuminates the public atrium inside. Motorized louvers protect the building from desert dust storms common to the Arizona landscape.