科伦拜校园事件是1999年4月20日于美国科罗拉多州杰佛逊郡哥伦拜恩高中发生的校园枪击事件。两名青少年学生—埃里克·哈里斯和迪伦·克莱伯德配备枪械和爆炸物进入校园，枪杀了12名学生和1名教师，造成其他24人受伤，两人随即自杀身亡。这起事件被视为美国历史上最血腥校园枪击事件之一。

这起屠杀事件引起了有关美国枪械暴力问题的争论。许多人也开始关注在中学校园里常见的欺凌现象和学生间的小圈圈文化，和在美国社会中常见的暴力电影和电子游戏可能产生的负面影响。有几个受害者据传是因为他们忠诚的基督教信仰而遭杀害，也引起人们开始关注对于信仰价值在社会和校园里普遍衰退的现象。枪击事件导致美国社会的道德恐慌，引起人们对于社会边缘人、重金属音乐、暴力电影、暴力电子游戏和青少年使用抗抑郁药的关注。

The Columbine High School massacre was a school shooting that occurred on April 20, 1999, at Columbine High School in Columbine, an unincorporated area of Jefferson County in the American state of Colorado. In addition to the shootings, the complex and highly planned attack involved a fire bomb to divert firefighters, propane tanks converted to bombs placed in the cafeteria, 99 explosive devices, and carbombs. The perpetrators, senior students Eric Harris and Dylan Klebold, murdered 12 students and one teacher. They injured 21 additional people, and three more were injured while attempting to escape the school. The pair committed suicide.