This master's thesis examines the implementation of decolonizing development practices at Diakonia, a Swedish faith-based INGO, in the midst of a global context of increasing crises such as climate change, poverty and inequality. The study aims to understand how Diakonia incorporates decolonial action into strategy and practice, thereby reducing power inequalities and imbalances. The work is based on Walter Mignolo's decolonial perspective and two practice reports from the sector. Using qualitative content analysis, the research analyzed governance documents and conducted in-depth interviews with Diakonia staff. The findings show that Diakonia is committed to local participation and equitable partnerships, and thus to dismantling traditional power hierarchies and incorporating local perspectives. However, there are significant gaps in the full implementation of these decolonial practices, particularly in the integration of local and indigenous knowledge as well as historical reflection on the organization's colonial past. This study argues for a reassessment of development paradigms and suggests that a thorough integration of decolonial frameworks can improve the relevance and impact of development interventions.