The US-China Rivalry in the Pacific: Implications for PNG National Security offers a comprehensive analysis of how great power competition shapes Papua New Guinea's security, politics, and development. Positioned at the heart of the Pacific, PNG faces unique challenges as the United States and China expand their influence through military cooperation, infrastructure investment, development aid, and diplomatic engagement. This book examines the country's strategic geography, economic dependencies, political dynamics, cybersecurity risks, and environmental vulnerabilities, providing a multi-dimensional view of national security. Drawing on documented evidence and practical observations, it explores Chinese infrastructure projects, U.S. defense partnerships, and the implications of foreign involvement for sovereignty and resilience. Written in an independent, grounded voice, the book provides policymakers, scholars, and general readers with clear insights into PNG's strategic position, the evolving Pacific theater, and the critical decisions necessary to navigate complex geopolitical pressures while safeguarding national interests and long-term stability.