To provide an electrostatic atomizer which forms an electric field with good balance in all of a plurality of atomization electrodes arranged to be able to stabilize an electrostatic atomization phenomenon.

The electrostatic atomizer includes: a plurality of atomization electrodes 1; dummy electrodes 2, arranged around the atomization electrodes 1 for stabilizing the electric field of the atomization electrodes 1; a liquid supplying means 3 for supplying a liquid for atomization to each atomization electrode 1; and a voltage applying part 4 for applying a voltage to the atomization electrode 1 and the dummy electrode 2.