An electronic device may include a housing including a first plate facing in a first direction and a second plate facing in a second direction opposite to the first direction, and a key assembly disposed on at least part of the first plate and including a plurality of keys for inputting data by a pressing operation, wherein the key assembly includes a keycap, a printed circuit board, a support structure disposed on the printed circuit board to support the keycap and supporting a pressing operation of the keycap, a contact point portion disposed between the support structure and the printed circuit board, a movable portion coupled to the support structure in the second direction, and an actuator coupled to the movable portion and providing a force for moving the keycap in the first direction or the second direction depending on whether the actuator is activated.