The CCNR works closely with the UN-ECE. The two organisations have jointly promoted a number of international conventions involving inland navigation, including the ADN Convention for which the two organisations provide a secretariat, and the CMNI Convention.

The CCNR participates in those UN-ECE bodies that are concerned with inland navigation (Inland Transport Committee, Working Party on Inland Water Transport (SC.3)). The UN-ECE’s Secretariat is invited to attend CCNR meetings.