Abstract: A tube cutting tool is described in which a cutting head is rotatably mounted within a cutting body wherein both define "C" shaped slots to enable the cutting tool to be inserted laterally over a tube. A cutting wheel is attached to the cutting head such that rotation of the cutting head causes the wheel to pass around the periphery of the tube. A feed device is incorporated which biases the cutting wheel into contact with the tube until the tubing wall has been completely severed. A gear drive mechanism interconnects a power source with the cutting head to rotate it about the tube. A clamping system is also disclosed to clamp the device onto the tube during the cutting process.