A cover glass tray including a body portion having a lower surface, a first guide portion disposed on the lower surface of the body portion, a second guide portion spaced apart from the first guide portion, and a support portion disposed between the first guide portion and the second guide portion, and having one surface extending in a first direction, in which the first guide portion includes a first protrusion extending in the first direction and a first bent portion bent from one end of the first protrusion in a second direction different from the first direction, and the second guide portion includes a second protrusion extending in the first direction and a second bent portion bent from one end of the second protrusion in the second direction.