Unpurified Ether may refer to:
- The loot from Final Fantasy XII.
- The material from Final Fantasy XII: Revenant Wings.
- The loot from Final Fantasy Tactics A2: Grimoire of the Rift.
- The item from Final Fantasy Tactics S.
Diethyl ether was once used in pharmaceuticals. It was frequently used as a general anesthetic until the adoption of halothane in the early 1950s, and is still occasionally used as an anesthetic in developing countries due to its low cost. A mixture of alcohol and ether was known as "Spirit of ether" or Hoffman's Drops.