World Blood Donor Day is an initiative by WHO. The aim of this day is to spread awareness about blood donation and the need for safe blood and blood products.

This day is celebrated every year to spread awareness about the significance of blood donation and to recognise the contribution of voluntary unpaid blood donors in saving lives.

The birth anniversary of Karl Landsteiner is commemorated as World Blood Donor Day who was an Austrian biologist, physician and the founder of modern blood transfusion.

The World Blood Donor Day theme for 2021 will be “Give blood and keep the world-beating."

India has the world's largest shortage of blood. Every year our nation requires about 5 Crore units of blood, out of which only a meager 2.5 Crore units of blood are available.