The World Marrow Donor Association (WMDA) comprises organisations and individuals that promote global collaboration and best practices for the benefit of blood stem cell donors and transplant patients.

Since 1994, WMDA has united experts from over 57 countries to ensure safe, ethical, and efficient donor matching. WMDA provides a global platform to streamline searches and promote equal access to treatment.

WMDA sets global donation standards, but rules may be different in each country. Use the tool below to see if you can register where you live.

WMDA is a global, non-profit association that’s all about improving how blood stem cells are provided to patients. For over 20 years, we’ve been working to make healthcare safer and better by running a special certification program.

WMDA offers a wide range of resources for investigators, physicians, donors and patients—from published books and statistical data to guidelines for donors and their families. Visit our resource library to learn more.

WMDA’s Search & Match Service (previous known as BMDW) is the best tool in the world for obtaining an overview of whether an unrelated stem cell source exists for a patient in need of a stem cell transplant.

Join us in Québec for the IDRC & WMDA Global Meetings 2025, a unique opportunity to be part of a global effort to enhance the lives of patients through improved donor registry practices and stem cell transplantation.

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The Pillar ‘Supporting Global Development’ supports WMDA members to develop and grow, so that more patients find the most suitable cell source. It has the following objectives at its core:

Meetings Connect with the WMDA community. Meetings & events. 2025 International Donor Registry Conference, Québec, Canada. 19-22. May . 2025 World Marrow Donor Day. 20. September. Patients & Donors. Become a Donor; Understanding Transplantation; Cord blood; Starting Materials; What is a registry? Find your registry;