word | | Legal system |
| compulsory | Argentina | mixture of US and West European legal systems; has not accepted compulsory ICJ jurisdiction |
| compulsory | Armenia | based on civil law system; has not accepted compulsory ICJ jurisdiction |
| compulsory | Australia | based on English common law; accepts compulsory ICJ jurisdiction with reservations |
| compulsory | Austria | civil law system with Roman law origin; judicial review of legislative acts by the Constitutional Court; separate administrative and civil/penal supreme courts; accepts compulsory ICJ jurisdiction |
| compulsory | Azerbaijan | based on civil law system; has not accepted compulsory ICJ jurisdiction |
| compulsory | Bahrain | based on Islamic law and English common law; has not accepted compulsory ICJ jurisdiction |
| compulsory | Bangladesh | based on English common law; has not accepted compulsory ICJ jurisdiction |
| compulsory | Barbados | English common law; no judicial review of legislative acts; accepts compulsory ICJ jurisdiction with reservations |
| compulsory | Belarus | based on civil law system; has not accepted compulsory ICJ jurisdiction |
| compulsory | Belgium | based on civil law system influenced by English constitutional theory; judicial review of legislative acts; accepts compulsory ICJ jurisdiction with reservations |
| compulsory | Belize | English law; has not accepted compulsory ICJ jurisdiction |
| compulsory | Benin | based on French civil law and customary law; has not accepted compulsory ICJ jurisdiction |
| compulsory | Bhutan | based on Indian law and English common law; has not accepted compulsory ICJ jurisdiction |
| compulsory | Bolivia | based on Spanish law and Napoleonic Code; has not accepted compulsory ICJ jurisdiction; the 2009 Constitution incorporates indigenous community justice into Bolivia's judicial system |