Youth apprenticeship is a strategy for building a more inclusive economy by creating affordable, reliable, and equitable pathways from high school to good jobs and college degrees. As youth apprenticeship programs develop and expand across the U.S., it is critical that practitioners develop plans for capturing, analyzing, and leveraging data at every stage of program development. After extensive consultation with leading youth apprenticeship practitioners and education and workforce experts, the Partnership to Advance Youth Apprenticeship (PAYA) has developed the PAYA Data Framework. This framework is designed to help program leaders identify relevant, actionable information and data they can collect to document their processes, monitor apprentice progress, and track outcomes for apprentices, employers, and other key stakeholders. Based on stakeholder feedback, the Framework has been organized into three categories--Partnership Data, Pathway Data, and Participant Data. The Youth Apprenticeship Data Framework is intended to be a practical and adaptable guide to support youth apprenticeship partnerships' efforts to build data systems that monitor the effectiveness of youth apprenticeship programs and inform continuous improvement activities. The framework can be used as a foundation that supports the data capacity of leaders and organizers working together to identify, develop, and scale up effective, equitable youth apprenticeship programs around the country. Programs should use this Framework to start conversations with partners about what data are being collected and by whom; to identify and address gaps in data collection; to develop and expand data sharing agreements; and to determine what data infrastructure will be needed to improve data capacity as programs expand.