| Albania: | Constitutional Court |
| Andorra: | Constitutional Court |
| Armenia: | Constitutional Court |
| Austria: | Constitutional Court |
| Azerbaijan: | Constitutional Court |
| Belgium: | Constitutional Court |
| Bosnia and Hercegovina: | Constitutional Court |
| Bulgaria: | Constitutional Court |
| Croatia: | Constitutional Court |
| Cyprus: | Constitution Supreme Court |
| Czech Republic: | Constitutional Court |
| Denmark: | Supreme Court |
| Estonia: | Supreme Court Constitution |
| Finland: | Supreme Court |
| France: | Conseil constitutionnel Droit francais |
| Georgia: | Constitutional Court |
| Spain: | Constitutional Court |
| Kingdom of the Netherlands: | Counsil of State Supreme Court Constitution |
| Ireland: | Supreme Court |
| Kazakhstan: | Constitutioal Council |
| Lietuva: | Constitutional Court |
| Liechtenstein: | State Court |
| Latvia: | Constitutional Court |
| Macedonia: | Constitutional Court Constitution |
| Malta: | Constitution Ministry for Justice and Home Affairs |
| Moldova: | Constitutional Court |
| Germany: | Bundesverfassungsgericht Constitution |
| Norway |  Supreme Court |
| Poland: | Trybunał Konstytucyjny |
| Portugal: | Tribunal Constitutional |
| Romania: | Constitutional Court |
| Russia: | Constitutional Court |
| Serbia: | Constitutional Court |
| Slovakia: | Constitutional Court |
| Slovenia: | Constitutional Court Constitution |
| Switzerland: | Tribunal Federal Constitution |
| Turkey: | Constitutional Court |
| Ukraine: | Constitutional Court |
| Hungary | Constitutional Court |
| UK: | Supreme Court |
| Italy: | Constitutional Court Constitution |