On World Blood Donor Day , celebrated on 14 June 2024, WHO, its partners and communities across the world will unite behind the theme: 20 years of celebrating giving: thank you blood donors ! The 20th anniversary of World Blood Donor Day is an excellent and timely opportunity to thank blood donors across the world for their life-saving donations over the years and honour the profound impact on both patients and donors . It is also a timely moment to address continued challenges, and accelerate ... World Blood Donor Day 2025: Every year, the world celebrates World Blood Donor Day (WBDD) to raise awareness of the need for safe blood and blood products while paying a global tribute to the millions of volunteer and blood donors who offer others a second shot at life. Celebrate World Blood Donor Day 2025 on June 14. Learn why blood donation matters, this year’s theme, who can donate, and how each donation brings hope and saves lives. On World Blood Donor Day , celebrated on 14 June 2025, WHO, its partners and communities across the world will unite behind the theme: Give blood , give hope: together we save lives.