This article presents a conceptualisation of children’s participation rights based on Miranda Fricker’s epistemic injustice. Drawing on research conducted in a secondary school in the UK, the article applies Fricker’s framework, in particular her concepts of testimonial and hermeneutical injustice, to explain some of the reasons for adults’ disquiet around children’s participation rights. Fricker’s concept of testimonial injustice explains how prejudice about a social group results in deflated attributions of credibility to their views and opinions. Hermeneutical injustice occurs when a social group struggles to make sense of their social experiences because of insufficient interpretive resources in the collective social imagination. By applying these concepts to children, I highlight the role of silence in conceptualising children’s right to be heard and to freedom of expression. I present a conceptual framework of participation, informed by epistemic injustice and based on empirical research, in order to bolster children’s participation rights.