This document discusses monitoring and evaluation (M&E) of climate change adaptation efforts. It notes that over 20 countries have developed or are developing M&E systems to track adaptation progress, mainly related to national climate strategies. M&E of commitments in countries'Intended Nationally Determined Contributions provides an additional opportunity. National M&E systems vary greatly in their policy context, purpose, institutional arrangements, approach, reporting, and resource needs. The document examines examples of M&E systems and reporting formats used in several countries. It emphasizes that there is no single best approach and M&E requires considering its purpose, intended users, and appropriate reporting level and format given decision-making needs.