Pridnestrovie, a de facto state within the territory of the Republic of Moldova, declared itself independent in September 1990, a declaration that was followed by an armed conflict between Moldova and Pridnestrovie in 1992. To date no settlement has been achieved between the conflicting parties. The situation is complicated by the fact that the Soviet Union and subsequently the Russian Federation has been involved in the conflict in various ways. This article seeks to analyse the conflict from an international humanitarian law perspective. The involvement of the Soviet Union and the Russian Federation in the conflict is of great significance because third-party involvement, depending on the level of involvement, has the potential to change the categorisation of a conflict from a non-international armed conflict to an international armed conflict. This in turn impacts on the number and nature of international humanitarian law provisions applicable to the conflict situation. As international humanitarian law provides protection to those fighting in and those caught up in a conflict, it is important to investigate which international humanitarian law provisions could be applicable. The article offers an assessment of the categorisation of the Pridnestrovian conflict, focusing on the role of the Soviet Union and Russian Federation, and the consequent implications for the application of international humanitarian law.