ELN may refer to:

• Equity-linked note, a financial instrument
• Elastin, a protein
• Ejército de Liberación Nacional, see
  • National Liberation Army (Colombia)
  • National Liberation Army (Bolivia)
• Electronic lab notebook, a software program
• Élan, an Irish pharmaceutical company listed as ELN on the New York Stock Exchange
• VAXELN, a computer operating system from Digital Equipment Corporation (DEC)

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