A disk apparatus includes a chassis, a disk tray and a tray panel unit. The tray panel unit includes a panel main body and a spring body. The spring body has a coil part, a pair of end attachment parts and a middle attachment part. An axial direction of the coil part is aligned with a width direction of the tray panel unit. The pair of end attachment parts extends from both axial ends of the coil part, respectively. The end attachment parts are fixedly coupled to one of the panel main body and a front end part of the disk tray. The middle attachment part is provided to an axial middle portion of the coil part. The middle attachment part is fixedly coupled to the other of the panel main body and the front end part of the disk tray.