A foreign substance removing apparatus that removes a foreign substance adhering on an optical member, comprising a piezoelectric element arranged at one end of the optical member, a transformer which generates a voltage to drive the piezoelectric element, the transformer including a primary-side wound wire and a secondary-side wound wire, the secondary-side wound wire being connected to the piezoelectric element, a first driving signal generation circuit which is connected to one end of the primary-side wound wire in the transformer, and generates a signal with a first frequency, and a second driving signal generation circuit which is connected to the other end of the primary-side wound wire in the transformer, and generates a signal with a second frequency.