Attributing children the characteristics of political actors is not necessarily immediate or conspicuous. This could be even more pronounced when environmentally concerned young people (ecological citizens) wish to act across national borders to address global environmental problems. Even though children are identified as key actors in the sustainable implementation of long-term climate change policies, and their inclusion in decision-making processes is recognised as a guarantee of intergenerational equity, children's access to different participatory methods, spaces and processes in public affairs has been the subject of debate for decades. Based on an ongoing socio-legal doctoral research, this contribution takes into account two main approaches to children's statuses and roles in climate change governance: firstly, the normative background of children's right to participate in public affairs in the area of climate change, mainly at international level; and secondly, the social developments of the mainstream methods and tools of participation, including the recent emergence of climate change lawsuits and the global youth movement. The contribution includes recommendations for strengthening the socio-, legal and policy framework which could provide guarantees for children to participate in climate change governance.