Open government data has become a vital instrument for addressing both longstanding and emerging policy issues. In particular, the recent pandemic and the green transition have underscored the need for governments to ensure access to timely, relevant, and high-quality data to foster resilience and facilitate a comprehensive whole-of-society response. This paper presents the main findings of the fourth edition of the OECD Open, Useful, and Re-usable data (OURdata) Index for 2023, which benchmarks efforts made by governments to design and implement national open government data policies. It encompasses over 670 data points collected from 36 OECD countries and 4 accession countries throughout 2022.