V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

CEN
       Comite Europeen de Normalisation (org., Europe, Brussels)


The Free On-line Dictionary of Computing (30 December 2018):

CEN

   Conseil Européen pour la Normalisation.

   A body coordinating standardisation activities in the EEC
   and EFTA countries.

   (1994-12-14)