The Greek State’s involvement in international space law (ISL) is considered to have begun with its membership in the International Telecommunication Union (ITU) as a founding member in 1865, although the ITU’s focus on space-related matters emerged much later. In reality, Greece’s active engagement in space matters started in the 1970s with the ratification of key ISL treaties, including the Outer Space Treaty. This was followed by its accession to major ISL organizations and managemenet systems –such as mainly the UN COPUOS, INTELSAT, and INMARSAT– in the 1980s. Within this framework, Greece played a significant role in shaping space law, such as by co-sponsoring proposals addressing key regulatory issues. Additionally, it demonstrated a strong commitment to both binding treaties and non-binding soft law instruments, highlighting the importance of international guidelines. This engagement underscores Greece’s recognition of reliable space infrastructure and sustainable space activity as crucial priorities, facilitated through its collaboration with organizations like the European Space Agency and its involvement in international space programs.