The invention provides an adjustable shelf bracket having means for making fine adjustments in the attitude of the bracket relative to the supporting surface, which allows the shelf to be levelled both longitudinally and transversely, and substantially facilitates alignment with adjacent shelves. In one embodiment this is accomplished by pivotally suspending a shelf clip from a vertical mounting gusset designed to be hung on the supporting surface, such that the attitude of the clip relative to the supporting surface can be adjusted. Adjusting means such as an adjusting screw engaged in a hole tapped through the clip bears against the mounting gusset to limit the travel of the clip under the weight of the shelf. The position of the adjusting screw thus determines the attitude of the portion of the shelf being supported by the clip.