The resilience of critical infrastructure is increasingly emphasised due to rising global security threats, such as Russia’s invasion of Ukraine. This single-case study examines how business-military collaboration in Sweden enhances critical infrastructure resilience, explicitly analysing how the Swedish government frames these collaborative efforts. Drawing on McNamara’s (2012) public management framework, a qualitative content analysis of government and business documents was conducted. Findings reveal extensive collaborative initiatives across various sectors, including food, energy, cybersecurity, and healthcare, highlighting significant interdependencies between public and private entities. Despite these collaborative efforts, challenges such as unclear regulations and guidelines persist, indicating that while collaboration is essential, it alone does not ensure resilience. The study underscores the necessity of clearly defined roles and responsibilities to enhance the effectiveness of these collaborations. The research contributes to understanding organisational resilience in critical infrastructure by elucidating the practical implementation of business-military collaborations and offering insights for policymakers and stakeholders to optimise future strategies and partnerships.