Provided are a hinge assembly that is pivotably supported to a hinge plate for pivotably supporting a door, and which is provided with an integrally coupled retaining lever that selectively fixes the hinge plate, and a refrigerator provided with the hinge assembly. The hinge assembly includes a fixing member, the hinge plate, and the retaining lever. The fixing member projects to an upper surface of a refrigerator main body. The hinge plate is pre-fixed to the refrigerator main body, with a portion of the fixing member inserted in one portion of the hinge plate and a refrigerator door pivotably mounted to another portion of the hinge plate. The retaining lever is pivotably coupled to the hinge plate, to selectively retain the hinge plate through rotating horizontally about the hinge plate.