Data governance is essential for organizations to create public value, manage risk, and deploy AI responsibly as data integration and AI capabilities expand. Key concerns include clarity of responsibilities, authority, data access, and alignment with organizational priorities and stakeholder needs. The Data Governance Self Assessment, developed from the UNESCO Data Governance Toolkit, is an interactive tool that helps organizations evaluate the maturity of their data governance, identify gaps, and prioritize actions. It is most effective when used collaboratively across different organizational roles, fostering dialogue and revealing varied perspectives to improve governance practices. This tool supports context-appropriate data governance in the digital and AI era.