IDEC

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:
  • IDEC-1 [fr], a 75ft trimaran built in 1985
  • IDEC 2, a 97ft trimaran built in 2007
  • IDEC 3, a 103ft trimaran built in 2006