An electrical connector with an antenna terminal includes an insulation housing (4) having a base portion (4a) with at least one mounting hole (6); an antenna terminal insulation column (9) extending forwardly from the base portion and having a central aperture (14) therethrough; and an outer conductor terminal (22) having a cylindrical terminal body (23) fitted over the antenna terminal insulation column and a conductor portion (24) extending outwardly from a lower edge of the terminal body and having a ring portion (25) which is placed on the mounting hole for attachment to a grounding object.