| K | Law in general, Comparative and uniform law, Jurisprudence |
| KB | Religious law in general, Comparative religious law |
| KBM | Jewish law |
| KBP | Islamic law |
| KBR | History of canon law |
| KBU | Law of the Roman Catholic Church, The Holy See |
| KD - KDK | British and Irish Law |
| KDZ | Law of the Americas (OAS, NAFTA) |
| KE | Canadian Law (federal) |
| KEA - KEY | Law of Canadian provinces and territories (e.g., KEA is law of Alberta, KEB is law of British Columbia) |
| KF | United States Law (see tab for breakdown) |
| KFA - KFW | Law of individual states (see tab for breakdown) |
| KFX | Law of individual cities |
| KG | Latin America - Mexico and Central America - West Indies, Caribbean area |
| KH | South America |
| KJ - KKZ | Europe |
| KL - KWX | Asia and Eurasia, Africa, Pacific Area, and Antarctica |
| KZ | Law of Nations (International Law) |