The clamshell package opener includes a driver gear and an idler gear that are compressed against a surface of the package. As the gears are compressed to hold the package, a cutting blade is positioned so as to puncture the clamshell package in the area adjacent the gears. Once the clamshell package has been punctured, the driver gear is rotated while the two gears are maintaining frictional engagement with the package. The rotation of the driver gear causes the package to pass through the gears while being cut by the cutting blade. This action can be performed anywhere along the package and can also be done around the outer periphery edge of the same.