The Karl Landsteiner Memorial Award is a scientific award given by the American Association of Blood Banks (AABB) to scientists with "an international reputation in transfusion medicine or cellular therapies" "whose original research resulted in an important contribution to the body of scientific knowledge". Recipients give a lecture at the AABB Annual Meeting and receive a $7,500 honorarium. The prize was initiated in 1954 to honor Karl Landsteiner, whose research laid the foundation for modern blood transfusion therapy.[1] In 2023, the AABB renamed the Karl Landsteiner Memorial Award as the Landsteiner-Alter Award in honor of both Karl Landsteiner and Harvey J. Alter.[2]