A connection terminal comprising: a tubular female connection body having conductivity and having a housing space extending along an axial direction; a male connection body having conductivity and configured to be inserted into the housing space to a fitting completion position along the axial direction; and an elastic member supported by an inner wall surface of the female connection body surrounding the housing space, having a contact point portion configured to contact an outer wall surface of the male connection body, and to press the male connection body, wherein the female connection body has a far-side protruding portion protruding from a position of the inner wall surface on a far side in an insertion direction with respect to the contact point portion, and an inlet-side protruding portion protruding from a position of the inner wall surface on an inlet side in the insertion direction with respect to the contact point portion, the far-side protruding portion and the inlet-side protruding portion configured to support the outer wall surface of the male connection body at the fitting completion position against pressing force of the elastic member, and the outer wall surface of the male connection body has a first recessed portion formed at a portion facing the inlet-side protruding portion such that when the male connection body is inserted into the housing space, the inlet-side protruding portion passes by the first recessed portion, characterized in that the first recessed portion is, at the outer wall surface of the male connection body, formed along the insertion direction at an intermediate portion between a front end portion and a back end portion of the male connection body with respect to a position facing the inlet-side protruding portion and a back side in the insertion direction with respect to a position facing the far-side protruding portion at the fitting completion position, so that the first recessed portion is arranged between the inlet-side protruding portion and the far-side protruding portion at the fitting completion position. a tubular female connection body having conductivity and having a housing space extending along an axial direction; a male connection body having conductivity and configured to be inserted into the housing space to a fitting completion position along the axial direction; and an elastic member supported by an inner wall surface of the female connection body surrounding the housing space, having a contact point portion configured to contact an outer wall surface of the male connection body, and to press the male connection body, wherein the female connection body has a far-side protruding portion protruding from a position of the inner wall surface on a far side in an insertion direction with respect to the contact point portion, and an inlet-side protruding portion protruding from a position of the inner wall surface on an inlet side in the insertion direction with respect to the contact point portion, the far-side protruding portion and the inlet-side protruding portion configured to support the outer wall surface of the male connection body at the fitting completion position against pressing force of the elastic member, and the outer wall surface of the male connection body has a first recessed portion formed at a portion facing the inlet-side protruding portion such that when the male connection body is inserted into the housing space, the inlet-side protruding portion passes by the first recessed portion, characterized in that the first recessed portion is, at the outer wall surface of the male connection body, formed along the insertion direction at an intermediate portion between a front end portion and a back end portion of the male connection body with respect to a position facing the inlet-side protruding portion and a back side in the insertion direction with respect to a position facing the far-side protruding portion at the fitting completion position, so that the first recessed portion is arranged between the inlet-side protruding portion and the far-side protruding portion at the fitting completion position.