In this study, the effects of the passivation treatment and arc current on the properties of Zn fine particles, prepared by the arc plasma method, were investigated to obtain particles with a minimum amount of oxide impurities for application in powder metallurgy. The average particle size of the Zn fine particles, prepared by this method, increased with the increasing arc current, and a minimum average particle size of 236.2 nm was achieved at an arc current of 40 A. The particle size distribution could be better fitted with a lognormal distribution function than with a normal distribution function. Further, the O concentration of the Zn fine particles, upon exposure to air, could be controlled by passivation treatment in 1% O2/Ar atmosphere. Thus, Zn fine particles, with low quantities of oxides, could be efficiently produced by this method.