A universal sign bracket is provided which can be cut to size and bent or even twisted to accommodate signs of various shapes and sizes. The bracket comprises a main leg and an intermediate flange extending generally perpendicular from an intermediate portion of the main leg. The intermediate flange can have spaced slots adjacent the main leg to receive mounting straps for mounting the bracket on a pole. The main leg can also have spaced openings to receive fasteners for mounting the bracket on poles and other supports. The main leg has a longitudinally-extending groove adjacent the intermediate flange to receive an edge of a sign panel with the sign panel than serving as a supporting gusset for the bracket when affixed by fasteners extending through the intermediate flange. The main leg also preferably has two spaced ribs along edge portions on the side opposite the flange to cooperate with supporting posts.