To provide an electroacoustic transducer where an excellent spherical sound field at all times is obtained by preventing the generation of an undesired vibration mode caused at a circumferential ridge.

In an electrostatic type spherical speaker AA that is formed by butting and fixing semi-spherical halves AA1 to each other provided with an annular base 10, a semi-spherical diaphragm 12 with a flange and a semi- spherical electrode 14, the semi-spherical electrode 14 is fitted on the annular base 10 so as to cover the entire semi-spherical diaphragm 12 fitted on the annular base 10 and the shape of the electrode 14 is a semi-spherical shape where a gap with the semi-spherical diaphragm 12 fitted on the annular base 10 is gradually increased as the shape goes away toward the surrounding from the middle part.