Yes it does, thanks to a flyby by Voyager last decade. See the accompanying image taken by the Galileo mission of the faint ring. For details about the ring system, here is a summary of the Voyager mission study:
Voyager discovered a ring around Jupiter. Its outer edge is 129,000 kilometers (80,000 miles) from the center of the planet, and, though the brightest portion is only about 6,000 kilometers (4,000 miles) wide, ring material may extend another 50,000 kilometers (30,000 miles) downward to the top of Jupiter's atmosphere.
Evidence also suggests that diffuse ring material extends as far out as the orbit of Amalthea. The ring is no more than 30 kilometers (20 miles) thick. Thus Jupiter joins Saturn, Uranus, and Neptune as a ringed planet -- although each ring system is unique and distinct from the others.
Copyright 1997 Dr. Sten Odenwald
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