In an electrical connector for connecting connection objects to each other in a connecting direction, a holding member has an accommodating portion between a first and a second surface to which the connection objects are opposed, respectively, when connected to said electrical connector. A connecting member has elasticity and is placed in the accommodating portion. The holding member includes a first and a second wall which define the accommodating portion therebetween. At least one of the first and the second walls includes a restraining portion defining a space which allows a portion of the connecting member to elastically move in a predetermined direction crossing the connecting direction.