A liquid dispenser provided outside of a sink and comprising: a cylinder body that has a hollow of cylindrical shape with an upper end and a lower end that are open, and a rotation limit hole opened by a predetermined height that is defined along a circumference of a side surface thereof, the cylinder body being coupled to the sink to extend vertically; and a liquid discharge nozzle including: one side at which an insertion extension having a cylindrical shape and rotatably connected to the cylinder body is defined; and another side at which a cock connected to a tube extending into the hollow of the cylinder body and the rotation limit hole is positioned; and a stopper accommodated in the rotation limit hole at one side thereof to limit a rotation range of the liquid discharge nozzle, wherein the liquid discharge nozzle is a second liquid discharge nozzle, the insertion extension is a second insertion extension, the tube is a second tube, and the cock is a second cock, and wherein the liquid dispenser further comprises: a first liquid discharge nozzle having one side at which a first insertion extension having a cylindrical shape and rotatably connected to an upper side of the cylinder body is defined and another side at which a first cock connected to a first tube extending into the hollow of the cylinder body and an upper end of the cylinder body is positioned. a cylinder body that has a hollow of cylindrical shape with an upper end and a lower end that are open, and a rotation limit hole opened by a predetermined height that is defined along a circumference of a side surface thereof, the cylinder body being coupled to the sink to extend vertically; and a liquid discharge nozzle including: one side at which an insertion extension having a cylindrical shape and rotatably connected to the cylinder body is defined; and another side at which a cock connected to a tube extending into the hollow of the cylinder body and the rotation limit hole is positioned; and a stopper accommodated in the rotation limit hole at one side thereof to limit a rotation range of the liquid discharge nozzle, wherein the liquid discharge nozzle is a second liquid discharge nozzle, the insertion extension is a second insertion extension, the tube is a second tube, and the cock is a second cock, and wherein the liquid dispenser further comprises: a first liquid discharge nozzle having one side at which a first insertion extension having a cylindrical shape and rotatably connected to an upper side of the cylinder body is defined and another side at which a first cock connected to a first tube extending into the hollow of the cylinder body and an upper end of the cylinder body is positioned. one side at which an insertion extension having a cylindrical shape and rotatably connected to the cylinder body is defined; and another side at which a cock connected to a tube extending into the hollow of the cylinder body and the rotation limit hole is positioned; and a stopper accommodated in the rotation limit hole at one side thereof to limit a rotation range of the liquid discharge nozzle, wherein the liquid discharge nozzle is a second liquid discharge nozzle, the insertion extension is a second insertion extension, the tube is a second tube, and the cock is a second cock, and wherein the liquid dispenser further comprises: a first liquid discharge nozzle having one side at which a first insertion extension having a cylindrical shape and rotatably connected to an upper side of the cylinder body is defined and another side at which a first cock connected to a first tube extending into the hollow of the cylinder body and an upper end of the cylinder body is positioned.