Space debris is one of the most challenging issues of space activities, which not only threatens the sustainability of the Earth’s orbit but can also have a devastating impact on the Earth’s environment. On this ground, and by considering Article IX of the Outer Space Treaty as a gateway to environmental domains, it could be reasonable to investigate the applicability of environmental law principles to tackle the challenges of outer space activities. In this regard, the Polluter Pays Principle (PPP) could be one of the most relevant environmental principles for space debris issues, suggesting a practical mechanism and compliance with it could be a condition for sustainable access to outer space. By examining its pros and cons, this paper makes an effort to bring to light the feasibility of applying the PPP to space debris.