To provide a ball cleaner by which many balls are easily cleaned without needing much time and labor.

A cylindrical vessel 13 consisting of a cylinder 13a and a sheathing board 13b is supported by a frame 11 having a moving wheel through a double bearing 14, a brush 12a is stuck onto the inner face of the vessel 13, and a rotary brush 12b is passed through the center of the vessel 13. A ball inlet 15 is provided in the periphery of the vessel 13, a lid 16 capable of being opened or closed by a hinge 16a and a lock handle 16b is attached to the inlet 15, and a packing 16c is inserted not to leak cleaning water. The rotary brush 12b is rotated by a geared motor 17 fixed to the outside of the frame 11.