Planetary means relating to a planet or planets. It can also refer to:

Science

* Planetary habitability, the measure of an astronomical body's potential to develop and sustain life * Planetary nebula, an astronomical object

People

* Planetary (rapper), one half of east coast rap group OuterSpace

Arts, entertainment, and media

* ''Planetary'' (comics), a comic book series by Warren Ellis and John Cassaday * " Planetary (Go!)", a 2011 song by rock band My Chemical Romance * ''Planetary Radio'', a public radio show about space exploration, produced by The Planetary Society

Organizations

* The Planetary Society, the Earth's largest space interest group

Technology

* Epicyclic gearing (planetary gearing), an automotive transmission technology * Planetary scanner, type of image scanner for making scans of rare books with mounted camera taking photos {{disambiguation