Plane may refer to:
- Realms, individual universes sometimes referred to as planes
- Cosmic Plane, an area separate from Gielinor in which Starflowers grow
- Spirit Plane, a plane of existence from which Summoning energy can be used to summon creatures
- Killerwatt plane, an area where Killerwatts are found
- Plane-freezer Lakhrahnaz, a monster found while training Dungeoneering
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