A connector terminal fabricated from a single metal sheet including: a contact portion including a first sheet portion and a second sheet portion, the first and second sheet portions (3221a, 3221b) being folded to overlap one on another; and a terminal main body including a terminal body in the form of a square pipe and a connector portion connecting the terminal body and a contact portion to each other, the contact portion defining a tab extending from the connector portion, the body including a ceiling, a pair of sidewalls perpendicularly extending from the ceiling, and a pair of floors extending horizontally and inwardly from the sidewalls, the connector portion including an extension portion formed as an extension of the contact portion, characterized in that the connector portion includes: a ceiling defined by a tapered surface extending from the ceiling of the body; a pair of sidewalls (322b, 322c) each having a gradually decreasing width; a floor defined by a tapered surface extending from the floor of the body; and a reinforcement portion covering therewith an end surface of the first sheet portion, an end surface of the second sheet portion, and at least a part of a surface of the second sheet portion in a proximal part of the contact portion, one of the sidewalls (322b, 322c) and the floor are defined with a bent portion around the extending portion, a part of the other of the sidewalls (322b, 322c) and the floor are defined a bent portion around the extending portion, the reinforcement portion and the extending portion overlap one on other at a distal end of the connector portion to thereby define a three-layered structure surrounded by the ceiling, the sidewalls (322b, 322c) and the floor. a contact portion including a first sheet portion and a second sheet portion, the first and second sheet portions (3221a, 3221b) being folded to overlap one on another; and a terminal main body including a terminal body in the form of a square pipe and a connector portion connecting the terminal body and a contact portion to each other, the contact portion defining a tab extending from the connector portion, the body including a ceiling, a pair of sidewalls perpendicularly extending from the ceiling, and a pair of floors extending horizontally and inwardly from the sidewalls, the connector portion including an extension portion formed as an extension of the contact portion, characterized in that the connector portion includes: a ceiling defined by a tapered surface extending from the ceiling of the body; a pair of sidewalls (322b, 322c) each having a gradually decreasing width; a floor defined by a tapered surface extending from the floor of the body; and a reinforcement portion covering therewith an end surface of the first sheet portion, an end surface of the second sheet portion, and at least a part of a surface of the second sheet portion in a proximal part of the contact portion, a ceiling defined by a tapered surface extending from the ceiling of the body; a pair of sidewalls (322b, 322c) each having a gradually decreasing width; a floor defined by a tapered surface extending from the floor of the body; and a reinforcement portion covering therewith an end surface of the first sheet portion, an end surface of the second sheet portion, and at least a part of a surface of the second sheet portion in a proximal part of the contact portion, one of the sidewalls (322b, 322c) and the floor are defined with a bent portion around the extending portion, a part of the other of the sidewalls (322b, 322c) and the floor are defined a bent portion around the extending portion, the reinforcement portion and the extending portion overlap one on other at a distal end of the connector portion to thereby define a three-layered structure surrounded by the ceiling, the sidewalls (322b, 322c) and the floor.