World Marrow Donor Day (WMDD) is celebrated annually to thank all blood stem cell donors worldwide. We thank unrelated donors, family donors, cord blood donors, donors who already have donated, and donors who are on the global registry waiting to donate.

World Marrow Donor Day is a day to raise awareness among the general public and decision-makers about the importance of registering as a stem cell donor and the impact of blood stem cell transplantation on a patients’ life.