There is provided a linear vibrator, including: a fixed part providing an interior space having a predetermined size; at least one magnet disposed in the interior space and generating magnetic force; a vibration part including a coil facing the magnet and generating electromagnetic force through interaction with the magnet and a mass body; and an elastic member coupled to the fixed part and the vibration part to mediate vibrations of the vibration part and having a damping increasing portion attached to a predetermined region of a surface thereof.