A nozzle for a cleaner has a nozzle housing including a suction flow path configured to allow air and dust to flow therethrough. A water tank is mounted on the nozzle housing to store water. The nozzle also has first and second rotation cleaning units arranged on a lower side of the nozzle housing. Each of the first and second rotation cleaning units include a rotation plate coupled to a mop. The nozzle includes a first driving device that has a first driving motor to drive the first rotation cleaning unit. The nozzle also includes a second driving device that has a second driving motor to drive the second rotation cleaning unit. Further, the nozzle has a water discharge port provided at a bottom of the nozzle housing to supply water in the water tank to each of the first and second rotation cleaning units.