Purpose: This scholarly article rigorously analyses Australia’s engagement in United Nations (UN) peacekeeping operations from 1947 to the present, focusing on the nation's substantial contributions, significant policy transitions, and the broader implications for international relations and global governance frameworks. Materials and Methods: Utilizing a qualitative methodological approach, this study systematically reviews over sixty peacekeeping missions involving Australia, drawing upon a diverse array of primary and secondary sources, including governmental reports, academic journals, and UN documentation. The timeframe spans critical historical moments, beginning with Australia’s initial involvement in international peacekeeping initiatives in the late 1940s and evolving through distinct geopolitical eras, including the Cold War, post-Cold War period, and contemporary conflicts (Baldwin et al., 2022; McDonald, 2023). The analysis is grounded in a constructivist framework intertwined with realism, allowing for a nuanced understanding of how Australia’s peacekeeping roles reflect and reinforce the interplay of national interests and international obligations. This theoretical lens facilitates an exploration of the changing nature of global conflicts, operational mandates, and evolving international norms (Kirton, 2023). Findings: The research reveals that Australia’s peacekeeping contributions have evolved significantly, marked by key policy shifts from unilateralism to multilateralism within the UN paradigm. The country’s notable involvements in critical missions, such as those in East Timor and the Solomon Islands, exemplify its commitment to regional stability while also reflecting strategic partnerships with key allies (Cousens & Kumar, 2022). Furthermore, these contributions highlight Australia’s capacity to respond to complex emergencies and humanitarian crises effectively, reinforcing its role as a key player in regional peace and security. Implications to Theory, Practice and Policy: This examination elucidates the implications of Australia’s peacekeeping operations for its foreign policy trajectory and international standing. As the nation grapples with contemporary security challenges - including humanitarian crises, intrastate conflict, and post-colonial nation-building - the analysis reveals that Australia’s peacekeeping engagements align with broader international relations trends. Notably, there is an increasing emphasis on multilateralism, the principle of state sovereignty, and collaborative security efforts among nations (Hawkins, 2023).