 Humanitarian interventions are among the most visible examples of global public health in action. These interventions are implemented and organized by diverse actors, including NGOs, philanthropies, and multinational organizations like the UN and WHO, often with support from health and military agencies from diverse countries. One way to conceptualize humanitarian interventions is as the public health response to the general moral position that it is wrong to stand by and allow others to suffer in a crisis when we have the resources to help. Under this framework, we have humanitarian duties or duties of beneficence to help those in desperate circumstances, and those duties transcend national borders. Public health services, material, and personnel are often among the most important responses in humanitarian crises, not only in outbreaks and epidemics but also in natural disasters, wars and violent conflict, displaced populations and mass migrations, famines, and droughts.