This paper presents a review of literature on resilience of health care systems during pandemic. Resilience of health care systems through the review of literature has been defined as capacity of a system to bounce back from an adverse event such as a pandemic. We have reviewed 35 articles published on the issue during last five years (ie, 2018-2022) from different countries, both developed and developing. Most researchers have undertaken studies in this area and have conceptualized resilience of health systems with respect to infrastructure development, safety, awareness, connectivity, self-regulation, adaptability, integrity, disaster management, inventory and stock management of essential supplies, quality of services, community involvement, reactive capabilities and risk management. The aim of this paper is to describe how health care system resilience is defined and prepare an introductory conceptual review as a preliminary step for further studies. This paper helps us in identifying the key research themes that characterize the inquiry around resilience in context of a health care system during and post COVID-19 and also the structural improvements and characteristics to improve the competence of a health care system to deem it resilient during pandemic.