What teams run a 3 3 5 defense?

Who Runs the 3-3-5 Defense in College Football?

The 3-3-5 defense, with its three down linemen, three linebackers, and five defensive backs, has become a go-to for teams looking to counter high-powered passing attacks and spread offenses. While not as common as traditional 4-3 or 4-2-5 schemes, it’s found a home in several college programs known for adaptability and defensive innovation.

Boise State has long been a standout, using the 3-3-5 to create confusion and pressure quarterbacks with hybrid defenders and creative blitz packages. Their success helped popularize the look across the NCAA. West Virginia also embraced the scheme under former defensive coordinators looking to exploit speed over size, particularly when facing Big 12 shootouts.

BYU has rolled out the 3-3-5 at key moments, especially when leaning on athletic linebackers who can drop into coverage or rush the passer. San Diego State (SDSU) has used it selectively, blending it with more conventional looks to keep opposing offenses guessing. Arizona turned to the formation during rebuilding years to maximize their secondary talent and mask weaknesses on the defensive line.

Even powerhouse programs have dabbled. Michigan experimented with the 3-3-5 during the 2010 season under defensive coordinator Greg Robinson, though it didn’t stick long-term. Meanwhile, TCU occasionally shifts into a 3-3-5 look, even though their base defense is technically a 4-2-5 nickel. Their use of versatile defenders allows smooth transitions between schemes depending on the opponent.

The 3-3-5 isn’t the standard, but for teams with the right personnel—especially athletic linebackers and strong safeties—it remains a viable weapon. As college offenses continue to evolve, so too will defensive responses, and the 3-3-5 will likely keep finding its moments to shine.