A condenser for refrigerator includes left and right or upper and lower headers spaced apart from each other for introduction or discharge of refrigerant, a tube unit including tubes mounted between the headers and spaced apart from one another to allow the refrigerant to pass through the tubes, and a fin structure mounted in the respective neighboring tubes to perform heat exchange between the refrigerant passing through the tubes and outside air, the fin structure including fins having a greater width than a width of the tubes. Providing the fins with a greater width than that of the tubes may achieve an expanded heat exchange range and higher heat exchange efficiency. Moreover, wider gaps between the fins ensure smooth air movement, causing a reduced pressure difference of the moving air and neither dust nor debris is trapped between the fins, resulting in higher heat exchange efficiency.