February 22 - Korean Health Spa Shooting: Five people were killed in at a Korean health spa in Norcross, Georgia, when a man got into an argument and opened fire inside the facility.
February 26 - Tennessee Nightclub Shooting: Multiple gunmen began firing into a nightclub crown in Jackson, Tennessee, killing one person and injuring 20 others.
February 27 - Chardon High School Shooting: A student opened fire in a cafeteria at Chardon High School, killing three students and injuring two others before he was arrested.
March 8: Pittsburgh Psychiatric Clinic Shooting: Two people were killed and seven wounded at a psychiatric hospital in Pittsburgh, Pennsylvania, when a gunman entered the hospital with two semiautomatic handguns and began firing. The gunman was killed by a university police officer.
March 31 - Funeral Home Shooting: A gunman opened fire on a crowd of mourners at a North Miami, Florida, funeral home, killing two people and injuring 12 others.
April 2 - Oikos University Shooting: A 43-year-old former student at Oikos University in Oakland, California, walked into his former school and killed seven people, "execution-style." Three people were wounded. The shooting suspect was arrested.
April 6 - Tulsa Shooting: Two men went on a deadly shooting spree in Tulsa, Oklahoma, shooting black men at random in an apparently racially motivated attack. Three men died and two were wounded. The two men were arrested.
May 29 - Seattle Café Shooting: A man in Seattle, Washington, opened fire in a coffee shop and killed five people and then himself.
July 9 - Delaware Soccer Tournament Shooting: Three gunmen opened fire at a soccer tournament in Wilmington, Delaware. Three people were killed, including a 16-year-old player the event organizer, and one of the gunmen. Two of the gunmen were arrested. They were apparently targeting the organizer.
July 20 - Batman Movie Massacre: James Holmes enters a midnight screening of The Dark Knight Rises and opens fire with a semi-automatic weapon; twelve people are killed and fifty-eight are wounded. Holmes was arrested.
August 5 - Sikh Temple Shooting: A white supremacist and former Army veteran shot six people to death inside a Sikh temple in suburban Milwaukee, Wisconsin, before killing himself.
August 14 - Texas A&M Shooting: Three people including the gunman were killed near the Texas A&M University campus. The violence started after a law enforcement officer delivered an eviction notice and was met by gunfire. Brazos County Const. Brian Bachmann and Thomas Alton Caffall were both pronounced dead in hospital. The third victim, Chris Northcliff, was caught in the crossfire and died. Four others were wounded.
September 27 - Minneapolis Workplace Shooting: A 36-year-old man who had just been laid off from Accent Signage Systems in Minneapolis, Minnesota, entered his former workplace and shot five people to death, and wounded three others before killing himself.
December 11 - Oregon Mall Shooting: A 22-year-old began shooting at random at a mall near Portland, Oregon, killing two people and then himself.
December 14 - Connecticut Elementary School Massacre: Adam Lanza, 20, murders twenty-six people at an elementary school in Newtown, Connecticut, including eighteen children. He then killed himself.