A refrigerator hinge comprising: a hinge supporter configured to be mounted on a front surface of a cabinet of a refrigerator, the hinge supporter defining a fitting hole and including a bracket support portion that at least partially surrounds an edge of the fitting hole and protrudes from a front surface of the hinge supporter; a hinge bracket configured to be perpendicularly coupled to the hinge supporter, the hinge bracket including an insertion portion that protrudes from a first end of the hinge bracket and is configured to be inserted into the fitting hole; and a hinge pin configured to be coupled to a second end of the hinge bracket opposite the first end, wherein, based on the hinge bracket being coupled to the hinge supporter, an inner edge of the bracket support portion contacts an outer circumferential surface of the hinge bracket, wherein the insertion portion comprises: a first surface that defines either a left side or a right side of the insertion portion; a second surface opposite the first surface; and a third surface that connects an end of the first surface with an end of the second surface, characterized in that the hinge supporter defines an expanding portion that expands from a rear end of the fitting hole, wherein one of a thickness of the first surface or a thickness of the second surface corresponds to a vertical width of the fitting hole, and the thickness of the other is smaller than the vertical width of the fitting hole, such that the insertion portion is configured to deform to fill the fitting hole and the expanding portion when the insertion portion is inserted into the fitting hole. a hinge supporter configured to be mounted on a front surface of a cabinet of a refrigerator, the hinge supporter defining a fitting hole and including a bracket support portion that at least partially surrounds an edge of the fitting hole and protrudes from a front surface of the hinge supporter; a hinge bracket configured to be perpendicularly coupled to the hinge supporter, the hinge bracket including an insertion portion that protrudes from a first end of the hinge bracket and is configured to be inserted into the fitting hole; and a hinge pin configured to be coupled to a second end of the hinge bracket opposite the first end, wherein, based on the hinge bracket being coupled to the hinge supporter, an inner edge of the bracket support portion contacts an outer circumferential surface of the hinge bracket, wherein the insertion portion comprises: a first surface that defines either a left side or a right side of the insertion portion; a second surface opposite the first surface; and a third surface that connects an end of the first surface with an end of the second surface, characterized in that the hinge supporter defines an expanding portion that expands from a rear end of the fitting hole, wherein one of a thickness of the first surface or a thickness of the second surface corresponds to a vertical width of the fitting hole, and the thickness of the other is smaller than the vertical width of the fitting hole, such that the insertion portion is configured to deform to fill the fitting hole and the expanding portion when the insertion portion is inserted into the fitting hole. a first surface that defines either a left side or a right side of the insertion portion; a second surface opposite the first surface; and a third surface that connects an end of the first surface with an end of the second surface, characterized in that the hinge supporter defines an expanding portion that expands from a rear end of the fitting hole, wherein one of a thickness of the first surface or a thickness of the second surface corresponds to a vertical width of the fitting hole, and the thickness of the other is smaller than the vertical width of the fitting hole, such that the insertion portion is configured to deform to fill the fitting hole and the expanding portion when the insertion portion is inserted into the fitting hole.