In the evolving landscape of Open Science, researchers face a complex set of legal frameworks that impact data management, intellectual property, and ethical practices. As OS emphasises transparency, collaboration, and data sharing, understanding and complying with regulations such as GDPR is crucial. These regulations govern everything from personal data protection and AI usage to open access and cross-border data flows, shaping how research is conducted and shared. Addressing these legal considerations effectively ensures that OS practices uphold high standards of integrity, accountability, and innovation.