Crystalline gallium nitride nanoribbon rings have been fabricated through a simple catalytic reaction using metallic Ga as source materials. The as-synthesized products were characterized using scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray powder diffraction, transmission electron microscopy, and selected-area electron diffraction. The results revealed that the products are pure, crystalline GaN with hexagonal wurtzite structure. The widths of the nanoribbon rings were in the range of 150–350nm and the diameters were 3–8μm. The formation mechanism of nanoribbon rings was discussed tentatively.