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: , a 75ft trimaran built in 1985 IDEC 2, a 97ft trimaran built in 2007 IDEC 3, a 103ft trimaran built in 2006