To provide a compact and non-bulky golf ball wiper for wiping out dirt on a golf ball, brushing stuck matters off and being carried in a pocket.

An oblong hole 9 is formed in an optional portion of a cover 1, which is changed into an approximately cylindrical shape when its both left/right sides are pressed mutually in the opposite direction, a button 8 fixed to a brush 5 to be stored is exposed from the oblong hole 9, and an optional-shape falling prevention string 4 is interposed in an optional part of the cover to store the wiper 2.