A linear compressor comprising: a cylinder defining a compression space; a piston configured to reciprocate in an axis direction within the compression space defined by the cylinder; and a linear motor configured to provide power to the piston, wherein the linear motor comprises: an inner stator disposed outside of the compression spaced defined by the cylinder and comprising a center core and a side core (212a,212b) disposed on at least one side of the center core; an outer stator that is spaced outward from the inner stator in a radius direction; and a magnet disposed in an air gap defined between the inner stator and the outer stator, the magnet being configured to move within the air gap defined between the inner stator and the outer stator and reciprocate the piston based on movement of the magnet, characterized in that the linear compressor further comprises a hook disposed on the side core (212a, 212b), and a hook coupling part disposed on the center core and configured to be coupled to the hook; the center core has a hollow cylindrical shape; the side core (212a, 212b) of the inner stator includes first and second side cores disposed on both sides of the center core, each of the first and second side cores including a core body coupled to a stator cover or a frame of the linear compressor and having an annular shape, a tip disposed on an outer circumferential surface of each of the first and second side cores and a protrusion disposed on an inner circumferential surface of each of the first and second side cores and on which the hook is disposed; and the first side core is coupled to a rear portion of the center core, and the second side core is coupled to a front portion of the center core. a cylinder defining a compression space; a piston configured to reciprocate in an axis direction within the compression space defined by the cylinder; and a linear motor configured to provide power to the piston, wherein the linear motor comprises: an inner stator disposed outside of the compression spaced defined by the cylinder and comprising a center core and a side core (212a,212b) disposed on at least one side of the center core; an outer stator that is spaced outward from the inner stator in a radius direction; and a magnet disposed in an air gap defined between the inner stator and the outer stator, the magnet being configured to move within the air gap defined between the inner stator and the outer stator and reciprocate the piston based on movement of the magnet, an inner stator disposed outside of the compression spaced defined by the cylinder and comprising a center core and a side core (212a,212b) disposed on at least one side of the center core; an outer stator that is spaced outward from the inner stator in a radius direction; and a magnet disposed in an air gap defined between the inner stator and the outer stator, the magnet being configured to move within the air gap defined between the inner stator and the outer stator and reciprocate the piston based on movement of the magnet, characterized in that the linear compressor further comprises a hook disposed on the side core (212a, 212b), and a hook coupling part disposed on the center core and configured to be coupled to the hook; the center core has a hollow cylindrical shape; the side core (212a, 212b) of the inner stator includes first and second side cores disposed on both sides of the center core, each of the first and second side cores including a core body coupled to a stator cover or a frame of the linear compressor and having an annular shape, a tip disposed on an outer circumferential surface of each of the first and second side cores and a protrusion disposed on an inner circumferential surface of each of the first and second side cores and on which the hook is disposed; and the first side core is coupled to a rear portion of the center core, and the second side core is coupled to a front portion of the center core.