Open Access

Nik Roeingh, David Wagner

• The Open Data Directive (ODD) constitutes a key element of European digital policy, designed to promote the reuse of public sector data. It aims to enhance government transparency, public participation, and economic growth by regulating conditions for public data reuse. While the ODD does not establish a general right to data access, it strengthens the reuse of publicly available datasets and introduces High Value Datasets (HVDs), which must be made available free of charge and with minimal restrictions. For the (social) sciences, the ODD creates a dual role: As users, (social) scientists benefit from access to public sector data, particularly HVDs encompassing geospatial, environmental, and statistical data. Simultaneously, the directive imposes obligations on (social) scientists con-ducting publicly funded research. Under the ODD, publicly funded research data must be reusable for commercial and non-commercial purposes when deposited in institutional or subject-based repositories. Notably, the directive distinguishes between research data and scientific publications, explicitly excluding the latter from its scope. By facilitating access to valuable datasets while promoting open science, the ODD presents an opportunity for the social sciences. It aligns with broader trends toward open data and transparent governance, making research results more accessible and reusable. However, implementation depends on national policies, and limitations – such as restrictions on access to public undertakings' data or dynamic datasets – persist. Despite these constraints, the directive marks a significant step toward greater openness in research and public sector information.