The campaign has been designed so it can run in all the European Union countries, and will have to last for several years because of limited funds.
The agency has developed the slogan "Not everyone has access to a dignified life", and the campaign aims to show that poverty affects more than just difficulties in finding housing.
The campaign will back organisations that have different aims, including homeless shelters and refugee associations.
Peter Kelly, representative for EAPN UK, said: "In using a coordinated campaign, there is the opportunity for greater impact. This means that not only do people see the same campaign everywhere they go, but also that the political powers receive a coherent message, as well as the media.
"Our message is therefore easier to broadcast because it echoes everywhere and in everyone."