This document outlines the OECD's contributions to COP26, the 2021 UN Climate Change Conference. It discusses key elements of the Paris Agreement that COP26 aims to advance, including enhancing transparency, ratcheting up ambition over time, conducting a global stocktake, and continuing climate finance. The OECD will support negotiations by providing analysis on topics like net zero targets and Article 6 rules. It will also highlight progress in sustainable finance, climate adaptation and resilience, and measuring finance flows. The document advertises the OECD's virtual COP26 pavilion with over 30 online events covering these issues.