An indoor unit of an air-conditioning apparatus including a body placed on a wall surface of a room that is an air-conditioned space, the indoor unit including a temperature sensor disposed at a position projecting from the body, and including a temperature detector that detects a temperature based on heat radiation from a target and a motor that causes the temperature detector to rotate, the position being a place where the temperature sensor is capable of detecting a temperature in all the horizontal directions by rotating the temperature detector.