Hemovigilance terminology is entitled to the surveillance of adverse reactions that could be encountered by blood donors and untoward effects of blood transfusion in a recipient [1]. This is a broad-spectrum aspect of blood transfusion services (BTS) as it begins from the collection of blood to the transfusion of the same to a recipient. There are a number of quality steps involving various sections of blood banking while a unit of blood is collected for the purpose of blood transfusion. Hemovigilance programmes are currently in place in a vast majority of countries to monitor donor and transfusion reaction in the view of prevention of future occurrences. This article aims to review the various hemovigilance systems across the world