This chapter explores Greece’s progression in EU space-related activities and law, tracing its journey from regional (EU) engagement to establishing a domestic space sector and legal framework. Initially, Greece gained knowledge by participating in major European space organizations and programs, such as EUTELSAT and EUMETSAT, which facilitated access to operational satellite services. Notably, Greece’s collaboration with the European Space Agency (ESA) began in the 1990s, culminating in full membership in 2005. Such collaborations allowed the Greek State to also integrate into European space initiatives, leveraging expertise to support national capabilities. In parallel, Greece aligned with EU space policies, marked by its initiation of satellite launches in the early 2000s, taking key steps to enhance its space capabilities and support regional connectivity. By 2017, Greece enacted its national space law, and established the Hellenic Space Agency (later the Hellenic Space Center), underscoring its commitment to space exploration, research, and governance. This milestone reinforced its role in contributing to EU space strategies while simultaneously advancing its domestic capabilities.