In recent years, Open Science (OS) has sparked much discussion among researchers in language testing, as in other fields. While the special issue on OS in language assessment has presented perspectives from various stakeholders, including researchers, testing companies, and universities, it underrepresents the views of government institutions that develop and administer language tests. In this Viewpoint, we discuss the benefits and challenges of OS practices for these institutions, drawing on our experiences at two government institutions in Türkiye. We also offer recommendations for adopting these practices within such contexts. By contributing to ongoing discussions about OS, we hope to promote communication and collaboration among stakeholders to support the effective and responsible implementation of OS practices in language assessment.