Abstract: A water-powered, rotary head shaver is provided which includes a housing having a hollow shaving head portion defining an interior chamber and having at least one opening and at least one water outlet port formed therein and a hollow handle defining an interior channel which communicates with the chamber of the shaving head portion and which has a water inlet port formed therein. A rotary head grill is mounted within the opening of the shaving head portion and a drive shaft is rotatably mounted within the chamber of the shaving head portion. An impeller having a plurality of vanes is mounted on the shaft and a rotary cutting head is coupled to the shaft for rotation therewith and is disposed adjacent to the shaving head grill plate for cooperative shearing engagement therewith upon rotation.