This document was developed under the scope of the project “Claiming Right to the City, Advancing Climate Justice: Strengthening the Social Movements in Brazil and Globally to Tackle Climate Crisis” carried out by Instituto Pólis and supported by Misereor. This project is part of a wider international articulated effort with two other Global Platform for the Right to the City (GPR2C) member partners: Kota Kita (Indonesia) and Development Workshop (Angola). The aim of this Glossary is to provide relevant, systematized and accessible information on climate change concepts, frameworks and stakeholders for GPR2C’s members and allies collective work in advancing climate justice through a right to the city approach. In that sense, elements on this glossary were chosen and critically analyzed, mainly, through a territorial and rights-based perspective. We start from the premise that climate change adverse impacts are felt in every city and territory, but not in the same way. Territorial and social inequalities cannot be invisibilized in mitigation and adaptation climate efforts. By mobilizing the right to the city, the project calls attention to territorial and social justice aspects, and also to the importance of community-based participatory process.