A cable connector with an oblique ground adapter includes a main body, a cable adapter and a ground adapter. The main body is formed with a vertical main plate and a side plate. The main plate has one side extended integrally with the side plate. The cable adapter secured on the main plate has an interior bored with a cable insert hole having a shaft line formed along a shaft center, longitudinally defined to have a perpendicular line to be intersected with the first shaft line. The ground adapter obliquely mounted on the side plate has an interior disposed with a threaded hole, having second shaft line formed along the shaft center of the threaded hole and slanting toward the perpendicular line to be intersected and formed with an acute angle, diminishing the breadth and volume of the side plate for lowering manufacturing cost of cable connectors.