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Which planets in the solar system have ring systems?

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Illustration showing the eight planets of the solar system in order from the Sun-Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune-depicted to scale by size, with labeled diameters in miles and kilometers. The Sun is partially visible on the left for comparison. — Solar system The planets (in comparative size) in order of distance from the Sun.

In the solar system, all four gas giant planets possess ring systems. These planets are:

Jupiter
Saturn
Uranus
Neptune

While Saturn’s rings are the most prominent and well-studied, having been observed since the 17th century, the rings of the other three planets are much narrower and were not discovered until the 20th century. These ring systems consist of disklike aggregations of dust, rock, and ice that orbit the planet's equator. Additionally, rings have been identified around some dwarf planets and other smaller bodies in the solar system.1