This book constitutes the refereed proceedings of the Third European Conference on Information Literacy, ECIL 2015, held in Tallinn, Estonia, in October 2015. The 61 revised full papers presented were carefully reviewed and selected from 226 submissions. The papers are organized in topical sections on information literacy, environment and sustainability; workplace information literacy and knowledge management; ICT competences and digital literacy; copyright literacy; other literacies; information literacy instruction; teaching and learning information literacy; information literacy, games and gamification; information need, information behavior and use; reading preference: print vs electronic; information literacy in higher education; scholarly competencies; information literacy, libraries and librarians; information literacy in different context.