A tractor beam is a focused graviton beam which can be used by starships and space stations to physically manipulate objects in space.

They were most often employed to tow a disabled or vulnerable ship to safety, or sometimes, used by an enemy ship to control the movement of the target vessel. Tractor Beams were generally only used at sub-warp velocities, how it was possible to tow a vessel at warp speed if both vessels' speeds were exactly matched. They could also be set to repel objects.