Self-control theory is tested in relation to violence on a sample of university students in Turkey. The primary findings indicate support for the theory net of the impacts of strain, deterrence, differential association, social bonding, and routine activity theories: The greater the low self-control, the greater the violence. No subdimensions of self-control have consistent significant impacts on violence. Most high-opportunity measures have positive impacts on violence. Interaction effects occur only among subdimensions of self-control and opportunity variables. Social class and age are significant even when low self-control measures were controlled.