Int. J. Web Based Communities, Vol. 12, No. 4, 2016 419 Copyright © 2016 Inderscience Enterprises Ltd. Factors influencing the intention to share knowledge in citizen media with stimulus-organismic-response framework Hana Fitriani, Achmad Nizar Hidayanto* and Eko K. Budiardjo Faculty of Computer Science, Universitas Indonesia, Kampus UI Depok, 16424, Indonesia Email: hana.ftrn@gmail.com Email: nizar@cs.ui.ac.id Email: eko@cs.ui.ac.id *Corresponding author Meyliana School of Information Systems, Bina Nusantara University, Jakarta 11480, Indonesia Email: meyliana@binus.edu Kongkiti Phusavat Center for Advanced Studies in Industrial Technology and Faculty of Engineering, Kasetsart University, Bangkok 10900, Thailand Email: fengkkp@ku.ac.th Abstract: The trend of citizen journalism enables people to actively share knowledge. This research aimed to analyse which factors influence the individual to share knowledge in citizen media. Our research model was organised using stimulus-organismic-response (SOR) framework by focusing stimulus from social and technological environment. The five points Likert scale questionnaire was developed and distributed to 850 Kompasiana’s contributors (the largest citizen media platform in Indonesia) via message feature, thus obtaining 295 valid respondents who fill the questionnaire completely. Those data then were analysed by structural equation modelling method using AMOS 22.0. The result shows that both social and technological environment significantly influences the intention to share knowledge. Keywords: knowledge sharing; citizen media; citizen journalism; social environment; stimulus-organismic-response model; technological environment; web communities; Indonesia.