Attacks on buildings and structures in Arizona

On May 30, 2009, 29-year-old Raul Flores Jr. and his daughter, nine-year-old Brisenia Ylianna Flores, were murdered during a home invasion in Arivaca, Arizona. The perpetrators were Shawna Forde, Jason Eugene Bush and Albert Gaxiola, all members of Forde's vigilante nativist group, Minutemen American Defense (MAD). Gina Gonzalez, the victims' wife and mother, was wounded but survived the attack after exchanging gunfire with the intruders, wounding Bush.

In the early hours of August 10, 1991, a mass shooting occurred at Thai Buddhist temple Wat Promkunaram (Thai: วัดพรหมคุณาราม; Wat Phrom Khunaram) in Waddell, Arizona, killing nine people. At the time, this was the deadliest mass shooting at a place of worship in U.S. history, until it was paralleled by the Charleston church shooting in 2015, which also killed nine people, and then superseded by the Sutherland Springs church shooting in Texas in 2017. As of 2024, it is the deadliest mass shooting in Arizona history.

The Bombing of Naco was an international incident which occurred in the border town of Naco, Arizona, during the 1929 Escobar Rebellion. While rebel forces were battling Mexican 'Federales' for control of the neighboring town of Naco, Sonora, the Irish-American mercenary and pilot Patrick Murphy was hired to bombard the government forces with improvised explosives dropped from his biplane. During the ensuing fighting, Murphy mistakenly dropped bombs on the American side of the international border on three occasions, causing significant damage to both private and government-owned property, as well as slight injuries to several American spectators watching the battle from across the border. The bombing, although unintentional, is noted for being the first aerial bombardment of the continental United States by a foreign power in history.

On November 29, 2012, a bomb placed at the back door of the Casa Grande, Arizona, U.S. Social Security Administration office shook the city's downtown but failed to breach the building. An Iraqi-born convicted felon, Abdullatif Ali Aldosary, 47, was charged. Evidence collected at his home shows he researched "terrorist bombs" and amassed appropriate materials. Aldosary, allowed entry as a refugee, was denied a green card based on his "terrorism-related activities" as an insurgent fighting Saddam Hussein in 1991. No motive has been suggested by authorities. Aldosary was also charged with an unrelated murder that occurred two days before the bombing.

The Bisbee massacre (a.k.a. the Bisbee murders or Bisbee raid) occurred in Bisbee, Arizona, on December 8, 1883, when six outlaws who were part of the Cochise County Cowboys robbed a general store. Believing the general store's safe contained a mining payroll of $7,000, they timed the robbery incorrectly and were only able to steal between $800 and $3,000, along with a gold watch and jewelry. During the robbery, members of the gang killed five people, including a lawman and a pregnant woman. Six men were convicted of the robbery and murders. John Heath, who was accused of organizing the robbery, was tried separately and sentenced to life in prison. The other five men were convicted of murder and sentenced to hang.

On January 8, 2011, United States Representative Gabby Giffords and 18 others were shot during a constituent meeting held in a supermarket parking lot in Casas Adobes, Arizona, in the Tucson metropolitan area. Six people were killed, including federal District Court Chief Judge John Roll; Gabe Zimmerman, one of Giffords's staffers; and a nine-year-old girl, Christina-Taylor Green. Giffords was holding a meeting called "Congress on Your Corner" in the parking lot of a Safeway store when Jared Lee Loughner drew a pistol and shot her through the head at point-blank range before proceeding to fire on others. One additional person was injured in the immediate aftermath of the shooting. News reports identified the target of the attack to be Giffords, a Democrat representing Arizona's 8th congressional district. Giffords's medical condition was initially described as "critical".

On November 11, 2018, a mass shooting occurred when 22-year-old Sterling Hunt opened fire outside a bar on North Broad Street in Globe, Arizona, killing three people and wounding another. Hunt was arrested later that night, pleaded guilty to three counts of murder, and sentenced to serve three consecutive life sentences in 2021.

The Power's Cabin shootout, or the Power Brothers shootout, occurred on February 10, 1918, when a posse attempted to arrest a group of miners at their cabin in the Galiuro Mountains. Four men were killed during the shootout, including three lawmen and Jeff Power, the owner of the cabin. The Power brothers, Tom and John, then escaped to Mexico with a man named Tom Sisson, but they were eventually caught after what was then the largest manhunt in the history of Arizona.

The Second Battle of Fort Defiance was a military engagement fought during the United States period of the Navajo Wars. On April 29, 1860, about 1,000 Navajo warriors assaulted the United States Army garrison of Fort Defiance in New Mexico Territory, now within present day Arizona. The Navajo achieved a surprise attack but was ultimately repulsed by 150 American defenders of the 3rd Infantry under Captain Oliver L. Shepherd. The Americans formed in the center of the buildings and withstood the Navajo attack. The natives retreated with a loss of around seven dead and several wounded while the Americans suffered four men killed in action and three wounded.

The Battle of Fort Buchanan was an Apache attack on the United States Army post of Old Fort Buchanan in southern Arizona Territory, which occurred on February 17, 1865. Though a skirmish, it ended with a significant Apache victory when they forced the small garrison of California Volunteers to retreat to the Santa Rita Mountains. Fort Buchanan was the only American military post conquered during the war against the Chiricahua.