Disclosed herein is a linear compressor. The linear compressor comprises a cooling channel disposed in contact with a bobbin on which a coil is wound, and a cooling fluid supply unit to supply a cooling fluid to the cooling channel such that the bobbin and the coil are cooled by means of the cooling fluid. Consequently, the coil is prevented from overheating, whereby compression efficiency of the linear compressor is effectively improved, and service life of the linear compressor is effectively increased.