This book constitutes the refereed proceedings of the 5th Conference on AElectronic Governance and Open Society: Challenges in Eurasia, EGOSE 2018, held in St. Petersburg, Russia, in November 2018. The 36 revised full papers were carefully reviewed and selected from 98 submissions. The papers are organized in topical sections on  smart city infrastructure, policy; digital privacy, rights,security;data science, machine learning, algorithms, computational linguistics; digital public administration, economy, policy; digital services, values, inclusion; digital democracy, participation, security, communities, social media, activism; social media discourse analysis; digital data, policy modeling; digital government, administration, communication.