The Venice Commission cooperates closely with several regional or language-based groups of constitutional courts. The purpose of this cooperation is to strengthen the court members of the groups in their task of safeguarding the supremacy of their constitutions.

By virtue of cooperation agreements with the Venice Commission, courts members of these groups are able to contribute their case-law to the CODICES database and the groups are represented in the JCCJ.

Membership in these groups as well as direct participation in the work of the JCCJ entitles the courts to become members of the World Conference on Constitutional Justice (WCCJ). In this context, the Venice Commission also cooperates with apex courts in the Commonwealth / Common Law countries.

• Conference of European Constitutional Courts (CECC)

Useful links:

• Resolution of the Circle of Presidents of the XIVth Conference on co-operation with the Venice Commission
• Presidency of the CECC 2024-2027 - Republic of Albania
• Presidency of the CECC 2021-2024 - Republic of Moldova - XIXth Congress 2024
• Presidency of the CECC 2017-2021- Czech Republic - XVIIIth Congress 2021

• Association des Cours constitutionnelles francophones (ACCF)

Useful links:

• Agreement between the Association of Constitutional Courts using the French language (ACCPUF) and the European Commission for Democracy through Law of the Council of Europe
• Protocol to the Vaduz Agreement of 30 April 1999 between the Association of Constitutional Courts using the French Language (ACCPUF) and the European Commission for Democracy through Law (Venice Commission)

• Southern and Eastern African Chief Justices Forum (SEACJF)

Useful links:

• Constitution of the SEACJF
• Co-operation agreement between the SEACJF and the Venice Commission
• Previous activities in the context of the cooperation with the SEACJF

• Eurasian Association of Constitutional Review Bodies (EACRB)

Useful link:

• Co-operation agreement between the EACRB and the Venice Commission in English and Russian

• Union of the Arab Constitutional Councils and Courts (UACCC)

Useful link:

• Co-operation agreement between the Venice Commission and the UACCC in English and Arabic
• Conference of Constitutional Jurisdictions of the Portuguese-Speaking Countries (CJCPLP)

Useful link:

• Co-operation agreement between the CJCPLP and the Venice Commission in English and Portuguese

• Ibero-American Conference of Constitutional Justice (CIJC)

Useful link:

• Co-operation agreement in English, Portuguese and Spanish

• Conference of Constitutional Jurisdictions of Africa (CCJA)

Useful link:

• Co-operation agreement between the Conference of Constitutional Jurisdictions of Africa and the Venice Commission in English and French
• Association of Asian Constitutional Courts and Equivalent Institutions (AACC)

Useful links:

• AACC Statute
• Co-operation agreement between the Association of Asian Constitutional Courts and Equivalent Institutions and the Venice Commission

• Commonwealth Courts

While there is no formal agreement between the Venice Commission and Commonwealth Courts, the then President of the Venice Commission, Mr Jan E. Helgesen, extended an offer of co-operation also to apex courts in Commonwealth countries at the occasion of the 1st Congress of the World Conference on Constitutional Justice in Cape Town on 22–24 January 2009. 

Therefore, the highest Courts in independent Commonwealth countries were invited to all three Congresses of the World Conference and they are entitled to membership in the World Conference according to Articles 2 and 4 of the Statute.

The Commonwealth Courts are also invited to appoint liaison officers whose task it is to contribute to the CODICES database and to exchange with other Courts via the Venice Forum.

As there is no formal group of Commonwealth Courts, the Supreme Court of the United Kingdom or the Constitutional Court of Canada have participated in the Bureau of the WCCJ in respect of these Courts.