For the first time ever, 25 of the world blood donor organisations, representing 21 countries and covering 1 billion people, are coming together to encourage more people to register as blood donors and donate blood.
Over the last decade, the Welsh Blood Service has seen a 34% drop in the number of donors donating blood and a 41% decline in new donors coming forward.
To highlight the importance of blood groups and to encourage people to register to give blood, we’re asking supporters to drop the letters A, B and O from their social media names.
People rarely think about their blood type – most of us don’t even know our blood type. But if that ‘type’ went missing in everyday life, people would start to pay closer attention to the need of blood.
Earlier this week, a new campaign was launched across the UK to recruit donors from the "missing type" blood groups.
They asked people to show their support by taking those three letters out of their logos on social media and encourage people from those missing types to "help fill the gap".
Pulse Community Healthcare, Admiral, Tesco and Tata Steel are among those taking part.
The letters A, B and O will disappear from famous landmarks across the world as part of the campaign.
Signage for the home of British television and film, Bafta, as well as Abbey Road and the Giant's Causeway will forgo the letters as part of the campaign.
Signs for Llanfairpwllgwyngyll train station in North Wales will also see the letters of the main blood groups disappear.
To find out more about the campaign or to give blood visit here.