Rwandan proverbs (imigani nyarwanda) represent a significant repository of indigenous philosophical thought, expressing complex reflections on truth, knowledge, morality, and human experience through concise metaphorical language. This study examines the thematic dimensions of relativism embedded in selected Rwandan proverbs, arguing that they articulate a coherent philosophical system grounded in contextual and relational understanding. Using a qualitative philosophical analysis, the research interprets proverbs through four major thematic dimensions: contextual truth, pragmatic and communal validation of knowledge, and situational ethics. The findings reveal that truth in Rwandan oral tradition is not conceived as absolute but emerges through lived experience, social interaction, moral circumstances, and practical outcomes. Drawing on relativist philosophy associated with Protagoras alongside African philosophical perspectives advanced by Mbiti, Gyekye, Wiredu, and Oruka, the study demonstrates that Rwandan proverbs expand classical relativism by situating knowledge within communal life and ethical responsibility. Rather than promoting epistemic uncertainty, the proverbs present a relational model of understanding that balances flexibility with social accountability. The research further argues that imigani nyarwanda function not merely as folklore but as an indigenous philosophical system preserving epistemological and ethical reasoning. By foregrounding African oral wisdom as a legitimate source of philosophy, the study contributes to broader debates on indigenous knowledge systems and the diversification of global philosophical discourse.