What is the name of Pandora’s gas-giant parent planet in Avatar?

Pandora’s gas-giant parent planet in Avatar is named Polyphemus.

In James Cameron’s fictional setting, Pandora is a moon orbiting Polyphemus in the Alpha Centauri system. The arrangement helps establish Pandora as an astronomical body rather than a conventional Earth-like planet. Its large parent planet can appear prominently in the sky and contributes to the film’s visual identity.

Polyphemus takes its name from the Cyclops in Greek mythology, especially the figure encountered by Odysseus in Homer’s Odyssey. This continues Avatar’s use of names drawn from classical mythology, including Pandora itself.

Pandora’s classification is sometimes misstated because characters and viewers casually call it a “world.” That broad term is understandable, but the specific astronomical answer is moon, with Polyphemus as its parent gas giant.