A speaker having improved sound quality by reducing a phase difference and also having an outstanding outward appearance is provided. In a speaker comprising a vibrating element 10, a drive unit 20 for vibrating the vibrating element 10, and a frame 30 supporting the vibrating element 10 and the drive unit 20, the vibrating element 10 comprises a front face region 10A which forms a continuously curved face having a convex-shaped cross-sectional portion T1 formed in its central portion and a concave-shaped cross-sectional portion T2 formed around the portion T1, and a connecting region 10B located on the rear side of the front face region 10A and connected to the drive unit 20.