- Université catholique de Louvain (UCL) (Louvain-la-Neuve)
- Université Saint-Louis (USLB) (Brussels)
- Facultés universitaires Notre-Dame de la Paix (UNamur) (Namur)
After almost three years of active collaboration within this network, the rectors of the four catholic universities decided on March 12, 2007 to open negotiations with the aim of fusing the four establishments into one single university. Each site would thenceforth be a campus of "Université catholique de Louvain".
The objective of the fusion has to be raised in September 2010.