A connector comprising: an electrically conductive shell; an inner body made of an insulating resin and disposed inside the shell; a terminal held by the inner body and disposed inside the shell; and an outer body made of an insulating resin, the outer body including: a first portion having a generally tubular shape and extending in a first direction (Y-Y'); a second portion; and an accommodation space in the first and second portions, the accommodation space securely accommodating the shell, wherein the second portion is larger than the first portion in outer cross-sectional dimensions in a second direction (Z-Z') and/or in wall thickness in the second direction (Z-Z'), the second direction (Z-Z') being orthogonal to the first direction (Y-Y'), the second portion is provided with an accommodation hole, the accommodation hole extending from an outer face of the second portion of the outer body to the accommodation space, characterised by further comprising a ground terminal located outside the shell, the ground terminal including: a first connection portion in contact with, or contiguous with, the shell, the first connection portion being accommodated in the accommodation hole of the outer body; a second connection portion on the first portion of the outer body, the second connection portion being contactable to a conductive member for connecting to the ground; and a junction extending from the first connection portion to the second connection portion. an electrically conductive shell; an inner body made of an insulating resin and disposed inside the shell; a terminal held by the inner body and disposed inside the shell; and an outer body made of an insulating resin, the outer body including: a first portion having a generally tubular shape and extending in a first direction (Y-Y'); a second portion; and an accommodation space in the first and second portions, the accommodation space securely accommodating the shell, wherein the second portion is larger than the first portion in outer cross-sectional dimensions in a second direction (Z-Z') and/or in wall thickness in the second direction (Z-Z'), the second direction (Z-Z') being orthogonal to the first direction (Y-Y'), the second portion is provided with an accommodation hole, the accommodation hole extending from an outer face of the second portion of the outer body to the accommodation space, characterised by further comprising a ground terminal located outside the shell, the ground terminal including: a first connection portion in contact with, or contiguous with, the shell, the first connection portion being accommodated in the accommodation hole of the outer body; a second connection portion on the first portion of the outer body, the second connection portion being contactable to a conductive member for connecting to the ground; and a junction extending from the first connection portion to the second connection portion. a first portion having a generally tubular shape and extending in a first direction (Y-Y'); a second portion; and an accommodation space in the first and second portions, the accommodation space securely accommodating the shell, wherein the second portion is larger than the first portion in outer cross-sectional dimensions in a second direction (Z-Z') and/or in wall thickness in the second direction (Z-Z'), the second direction (Z-Z') being orthogonal to the first direction (Y-Y'), the second portion is provided with an accommodation hole, the accommodation hole extending from an outer face of the second portion of the outer body to the accommodation space, characterised by further comprising a ground terminal located outside the shell, the ground terminal including: a first connection portion in contact with, or contiguous with, the shell, the first connection portion being accommodated in the accommodation hole of the outer body; a second connection portion on the first portion of the outer body, the second connection portion being contactable to a conductive member for connecting to the ground; and a junction extending from the first connection portion to the second connection portion. a first connection portion in contact with, or contiguous with, the shell, the first connection portion being accommodated in the accommodation hole of the outer body; a second connection portion on the first portion of the outer body, the second connection portion being contactable to a conductive member for connecting to the ground; and a junction extending from the first connection portion to the second connection portion.