A robot cleaner having a static-charge removal device to prevent deterioration in performance or damage to an interior circuit of the cleaner due to static charge. The robot cleaner includes a conductive trap member to trap frictional static charge, a discharge member electrically connected to the trap member to discharge the static charge, trapped by the trap member, into another kind of energy, for example, light, sound, or kinetic energy, and a ground member located on the robot cleaner while being connected to the discharge member. The robot cleaner prevents adherence of dust, loose debris, etc. as well as damage to an interior circuit thereof due to static charge, thereby efficiently performing a cleaning operation.