An air conditioner that further provides a lighting function is provided. The air conditioner can increase space utilization of a ceiling by the lighting device being integrally installed in the indoor unit. In addition, heat generated at the lighting device can be radiated by the cooling structure provided in the indoor unit, and thereby overheating of the lighting device can be prevented. The air conditioner includes a blowing fan configured to flow air, a housing in which an intake port is formed to suction air by the blowing fan, a lighting device provided in the housing, and a cooling channel configured to guide the air suctioned by the blowing fan to pass the lighting device.