Preface17th Workshop on High Energy Spin Physics was a continuation of the series of workshops, started in Dubna in 1981 due to the initiative of the prominent theorist Lev Iosifovich Lapidus. Since than, such workshops are taking place in Dubna or Protvino each odd year, between Spin Physics. These workshops provide an opportunity to discuss the news of the respective year. From the other side, their important specifics was the possibility of participation of the numerous participants from Former Soviet Union and Eastern Europe countries, for which the long travels may be difficult due to financial (and earlier also bureaucratic) reasons.There were more than 100 participants from Russia, Germany, Czech Republic, Italy, Poland, Slovakia, USA, Armenia, Bulgaria, Estonia, Netherlands, Great Britain. The last years brought many new experimental results, starting from the Higgs boson discovery at LHC. In the talk of I. Ginzburg (Novosibirsk) the two-doublet Higgs model was considered focusing on the C and P symmetries important for spin physics. The theoretical possibilities of new particles production and searches at LHC and future ILC were considered in the talks of A. Pankov and A. Tsytrinov from Gomel.