To provide a door device of a refrigerator or the like having a relatively simple structure and improved in opening/closing operability of a door.

This door device of a refrigerator or the like is provided with: a slide rail 11 arranged on the upper side of an refrigerator opening 4 of a body 7, mounted in parallel with the outside surface of the body and extending between the right and left sides; the door 3 suspended from the slide rail through a hanger 2 having a hanger roller 24 sliding on the slide rail for opening/closing the refrigerator opening; an upper guide rail 13 mounted on the outside surface of the body below the slide rail and extending between the right and left sides; and an upper guide roller 27 mounted on the upper part of the door and slidably abutting on the front surface of the upper guide rail. The hanger comprises a fixed hanger plate 21 fixed to the upper part of the door, and a movable hanger plate 22 equipped with a hanger roller at the upper end and rotatably connected to the fixed hanger plate 21. An angle on the body side formed by both the hanger plates is smaller than 90° in a state where the hanger roller is mounted on the slide rail and the upper guide roller abuts on the front surface of the upper guide rail.