Disclosed herein is a speaker unit, including: a magnetic circuit having a magnet and a coil; a vibrating plate adapted to be vibrated by a drive force of the magnetic circuit; and a frame having a circuit mounting portion to which the magnetic circuit is mounted, an edge mounting portion to which an edge of the vibrating plate is mounted, and plural leg portions through which the circuit mounting portion and the edge mounting portion are coupled to each other and which are provided in spaced relation to one another in a circumferential direction, wherein irregularity portions are provided in the plural leg portions, respectively, and forms of the irregularity portions are made different from each other at least in two of the leg portions.