The term elf may refer to:

• Elf, a mythical creature, or a subtype, the dark elf
• Elves, a form of upper atmospheric lightning
• TotalFinaElf, a French oil company
• Elf (band), a rock group founded by Ronnie James Dio
• Elf (movie), a 2003 film starring Will Ferrell
• ELF (company), a Japanese company that makes hentai CGI and games.

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• Elves are a type of upper atmospheric lightning.

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The TLA ELF may refer to:

• Earth Liberation Front
• Eritrean Liberation Front
• Extremely Low Frequency
• Endangered Language Fund
• ELF submachinegun
• Executable and Linkable Format
• Elvish Linguistic Fellowship
• Equality Liberty Fraternity