According to various embodiments of the disclosure, an electronic device may comprise a housing at least partially including an electrically conductive material, a first circuit board disposed in the housing, a connection member disposed on the first circuit board and partially extending past an edge of the first circuit board, a second circuit board disposed in the housing and connected to the connection member from a side of the first circuit board in which the connection member extends, and a shielding member disposed to surround the connection member and the second circuit board inside the housing. The shielding member may be electrically connected to at least one of the housing and the first circuit board. Other various embodiments are possible.