A linear compressor is provided that includes a stationary member including a cylinder that provides a space to compress a refrigerant; a movable member linearly that reciprocates with respect to the stationary member, and includes a piston that compresses the refrigerant inside the cylinder and a supporter piston connected to the piston and having a support portion that extends in a radial direction of the piston; front main springs positioned so as to be symmetrical with respect to centers of the piston and the supporter piston, one end of each of which is supported by a front surface of the support portion of the supporter piston and the other end of each of which is supported by the stationary member; a rear main spring positioned at an opposite side of the piston, one end of which is supported by the supporter piston; and a back cover having a support portion that constrains the other end of the rear main spring from moving in a transverse direction.