In the region, it is estimated that there are over 650 million persons with disabilities. However, without accurate, timely and disaggregated data, countries are unable to develop effective policies and programmes, monitor the wellbeing of persons with disabilities and evaluate the equity and impact of development efforts. This endangers country commitments to ‘leave no one behind’ and undermines their obligations to the Convention on the Rights of Persons with Disabilities. This groundbreaking report demonstrates the importance of ensuring data is inclusive and provides recommendations for immediate action in order to improve the collection, analysis and reporting of disability data. We hope this report will be used as a tool for future advocacy and ultimately better data for all.