An electrical connector according to an embodiment includes a plurality of signal contacts with an electrically conductive property, a housing with an insulation property, and a shell with an electrically conductive property. The plurality of signal contacts are arrayed along a first direction of the electrical connector and are held by the housing. The shell covers each of a plurality of outer surfaces of the housing that exclude a surface that faces a principal surface of a wiring substrate, and faces a connection part(s) that is/are connected to the wiring substrate on an outer surface of the housing and the plurality of signal contacts, with a gap(s), in a second direction that is a direction along the principal surface of the wiring substrate and is orthogonal to the first direction.