This book analyzes the decolonial becoming of Indigenous communities, teachers, and youth in language policy. It focuses on decolonizing efforts towards hegemonic language ideologies in Nepal’s language education policies and practices. It emphasizes ideological analyses with Indigenous Yakthung villagers, teachers, and youth towards building critical ideological awareness, advocacy, and activism in decolonizing language ideologies and reimagining equitable multilingual policies and pedagogical practices. The book adopts an engaged approach to show how Indigenous people reclaim their agency as transformative actors in language policy. Informed by Indigenous critical praxis and decolonial thinking, the book proposes engaged language policy as a decolonial and transformative paradigm that shifts our attention from the question of 'what' to the questions of 'who' and 'how' in language policy.