New technologies and a growing global consciousness have created innovative opportunities for young people to connect locally, nationally and internationally for social action. This paper describes the dynamics of collective action in this new environment. Particular attention is given to how youth social action initiatives use information and communication technologies (ICT) to foster connection, action and sustainability. In-depth interviews were performed with five youths (aged 18-24 years) and two youth workers at two international non-government organizations (NGOs) focusing on social justice and human rights: Global Youth Connect and Amnesty International Canada. Qualitative methods were used to code and analyze the interview tapes and notes. Three main results are discussed: (i) the role of connection in building a youth action movement; (ii) the differential use of various communication technologies; and (iii) access barriers to connection opportunities. ICT enables new and expanded ways of connecting youth to express and share their experiences, which is a key success factor for social action initiatives.