IDEC may refer to:
- Biogen Idec, a biotechnology company
- IDEC Corporation, a Japanese manufacturer of automation and control products
- International Democratic Education Conference, an annual academic and youth conference
- Toralizumab (IDEC 131), an antibody and an immunosuppressive drug
- The sponsor name given to ocean racing trimarans skippered by French yachtsman Francis Joyon:
This disambiguation page lists articles associated with the title IDEC.
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