Provided is an electronic device including an antenna module. The electronic device may include: a housing constituting an external appearance of the electronic device, a support member including a first bridge, a printed circuit board coupled to one surface of the support member, a first antenna constituting a first part of the housing and connected to the support member through the first bridge, a second antenna constituting a second part of the housing, a cut-off portion separating the first antenna and the second antenna, and a first connection member and a second connection member coupled to the first bridge. The first connection member may be connected to a ground of the printed circuit board through a first capacitor and may be disposed closer to the cut-off portion than the second connection member connected to the ground of the printed circuit board through a second capacitor. Other embodiments are also possible.