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. A mixture of alcohol and ether was known as "Spirit of ether" or Hoffman's Drops. In the United States, it was removed from Pharmacopeia prior to June 1917.