A supporting apparatus of a display device is provided that includes a fixing unit, one or more sliding units, and a device connecting part. The fixing unit may be fixed to a mounting position. The sliding units may be rotatably connected to the fixing unit. The device connecting part may be rotatable relative to the sliding unit and may be coupled with the display device. The sliding unit may include a first sliding member rotatable relative to the fixing unit, and a second sliding member slidable relative to the first sliding member.