Ezer Mizion or Ezer Mitzion (Hebrew: עזר מציון, literal translation: "Aid from Zion") is an Israeli health support organization offering a wide range of medical and social support services for Israel's sick, disabled and elderly.

Ezer Mizion, established in 1979, runs the world's largest Jewish Bone Marrow Donor Registry.

this registry was extended significantly by Moti and Bracha Ziser who founded "Oranit house," a center for cancer patients and their families.

Ezer Mizion has branches throughout Israel.

In 2008, the organization was awarded the Israel Prize for lifetime achievement & special contribution to society and the State of Israel.