One embodiment disclosed in the present disclosure may provide an antenna device that includes: a metal member that forms at least a part of an external housing for the electronic device; a printed circuit board (PCB) coupled to a feed connector of the metal member, such that the metal member is configured to operate as an antenna radiator for the PCB; and the metal member further including at least two grounding connectors that are coupled to ground through the PCB, wherein the feed connector and the two grounding connectors are located at different positions on the metal member, and may provide an electronic device that includes the same. Accordingly, it is possible to easily design an antenna that operates in a desired frequency band, to reduce the cost, to make the exterior of the device appealing due to the advantage of design, and to maximize the efficient use of space for the design of a multiband antenna.