Rare earth

Rare earth may refer to:
 * Rare-earth elements, a group of elements on the periodic table
 * Rare-earth mineral, a mineral substantively composed of these elements
 * Rare-earth magnet, a type of magnet that employs rare earth elements to increase effectiveness
 * Rare Earth hypothesis, the theory that complex life in the universe is exceptionally rare
 * as a proper noun:
 * Rare Earth: Why Complex Life Is Uncommon in the Universe, a book by Peter Ward and Donald E. Brownlee
 * Rare Earth (band), an American musical group
 * Rare Earth Records, a subsidiary of Motown Records which produced rock music