No. 21 (00102) Family name : Boos Given name : Edward Affiliation : Skobeltsyn Institute of Nuclear Physics, Moscow State University Abbreviation : SINP MSU E-mail address : boos@theory.sinp.msu.ru Title : CompHEP based event generators for colliders Authors : E.Boos (On behalf of the CompHEP collaboration) Abstract : We discuss how the CompHEP program is used for preparing event generators for various physics processes to be used in the analysis at colliders. We present a few delicate issues implemented in CompHEP which make such generators more efficient to use. Several concrete physics examples, namely the generator SingleTop and the generator for MSSM Higgs bosons in the intense coupling regime at hadron colliders, the generator for sfermion pair production with their subsequent decays to polarized fermions at Linear Colliders,are presented. We discuss shortly the CompHEP based Monte Carlo event data bases (MCDB) prepared for the LHC and Tevatron.