An electronic device including an indicator is provided. The electronic device includes a first housing structure including a first face oriented in a first direction, and a second face oriented in a second direction opposite the first direction, a second housing structure including a third face oriented in a third direction, and a fourth face oriented in a fourth direction opposite the third direction, a hinge structure rotatably connecting the first housing structure and the second housing structure to each other, the hinge structure configured to provide a folding axis that is a rotating center of the first housing structure and the second housing structure, a flexible display extending from the first face to the third face across the hinge structure, and a hinge case disposed between the first housing structure and the second housing structure to accommodate the hinge structure therein to conceal or protect the hinge structure.