An electrokinetic electro-acoustic converter includes a first magnetic pole; a second magnetic pole forming a magnetic gap between the second and the first magnetic pole and arranged in a space excluding the space above the upper surface and below the lower surface of the first magnetic pole; a yoke; diaphragm; and a voice coil. The yoke makes one magnetic pole surface of the first magnetic pole magnetically coupling with one magnetic pole surface of the second magnetic pole and supports them. The diaphragm is disposed in a space above the first magnetic pole and in a space below the second magnetic pole and its outer circumference is supported by the yoke. The voice coil is disposed in the magnetic gap and fixed to the diaphragm. At least one of the first magnetic pole and the second magnetic pole includes a magnet.