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ECMOjo is a simulator and trainer for extracorporeal membrane oxygenation. ECMOjo is a computer application implemented in Java. ECMOjo is available for all major operating systems including Windows, Macintosh, Linux and UNIX. The application consists of a graphical user interface to teach physicians, nurses and students the basics of extracorporeal membrane oxygenation.

In intensive care medicine, extracorporeal membrane oxygenation (ECMO) is an extracorporeal technique of providing both cardiac and respiratory support oxygen to patients whose heart and lungs are so severely diseased or damaged that they can no longer serve their function. An ECMO machine is similar to a heart-lung machine. To initiate ECMO, cannulae are placed in large blood vessels to provide access to the patient's blood. Anticoagulant drugs are given to prevent blood clotting. The ECMO machine continuously pumps blood from the patient through a "membrane oxygenator" that imitates the gas exchange process of the lungs. Oxygenated blood is then returned to the patient.
ECMOjo has been developed by the Telehealth Research Institute (TRI), John A. Burns School of Medicine (JABSOM) of the University of Hawaii.