The Plenary Meeting of COSAC is a forum for members of the European affairs committees from the national parliaments of EU member states and the European Parliament. COSAC enables national parliamentarians to regularly discuss current European political issues with key European decision-makers from the European Parliament, the Commission, and the Council.
The name COSAC is an abbreviation for "Conference of Parliamentary Committees for Union Affairs" (in French: Conférence des organes spécialisés dans les affaires communautaires). COSAC has held meetings twice a year since 1989.
The Plenary Meeting of COSAC will be held on 30 November - 2 December 2025 in Copenhagen at Tivoli Hotel and Congress Center.
Typically, between 250-300 people attend the Plenary Meeting of COSAC.