Abstract: The propane tank dolly comprises a base platform, a containment wall, a pair of wheels, and a handle. The propane tank dolly may be used to transfer a propane tank from a grill to a vehicle and may also be used to protect both the propane tank and the vehicle while the propane tank is transported to a tank exchange center in the vehicle. The propane tank is placed on the base platform within the containment wall and a lid may be placed onto the top of the containment wall. The handle may be extended from within left and right handle bases to move the propane tank dolly on the pair of wheel. The handle may be collapsed into the left and right handle bases to facilitate placing the propane tank dolly and propane tank into the vehicle.