The Northern Illinois University shooting was a school shooting that took place on February 14, 2008, at Northern Illinois University in DeKalb, Illinois. Steven Kazmierczak opened fire with a shotgun and three pistols in a crowd of students on campus, killing five students and injuring 17 more people, before fatally shooting himself.

The shooting happened at the campus's Cole Hall at approximately 3:05 p.m. Central Standard Time. The school placed the campus on lockdown; students and teachers were advised to head to a secure location, take cover, and avoid the scene and all buildings in the vicinity of the area.After the shooting, the university administration cancelled classes for the rest of the week as well as the following week.