Crystal

Crystal may refer to:
 * Crystal Ball, a recurring object first seen in Yume Kōjō: Doki Doki Panic.
 * Crystal, an attack used by enemies in Super Mario RPG: Legend of the Seven Stars.
 * The Earth, Fire, Water, and Wind Crystals which assist Culex in battle, also from Super Mario RPG.
 * Crystal, an object from Super Mario Galaxy.
 * The four bird-shaped crystals which appear as key items in Wario: Master of Disguise.
 * Magic Ball, a goal object found in Super Mario Bros. 3 and Super Mario World also known as a Crystal.
 * Thorn, an obstacle from the Yoshi's Island series also known as a Crystal.
 * Crystal Block, a type of block from Super Mario 3D World.