To provide a hydraulic torque wrench capable of obtaining the sufficient effect of a reaction receiver with a simple device and facilitating, as necessary, an operating for simultaneously fastening opposed bolts, without needing the special addition of the reaction receiver and separately preparing two sets of hydraulic torque wrenches for simultaneously fastening opposed bolts.

Two sets of hydraulic torque wrenches 1, 1a are mounted to respective ends 13, 14 of one tubular body 12. The respective hydraulic torque wrenches are disposed such that the respective hydraulic wrenches share therebetween an operational turning force and reaction receiver turning force motivated by the effective length of the tubular body as an arm.