Anglo-Saxon law (Old English ǣ, later lagu "law"; dōm "decree, judgement") is a body of written rules and customs that were in place during the Anglo-Saxon period in England, before the Norman conquest. This body of law, along with early Scandinavian law and Germanic law, descended from a family of ancient Germanic custom and legal thought. However, Anglo-Saxon law codes are distinct from other early Germanic legal statements - known as the leges barbarorum - in part because they were written in Anglo-Saxon, instead of in Latin. The laws of the Anglo-Saxons were the second in medieval Western Europe after those of the Irish to be expressed in a language other than Latin.
Inked records of early Germanic law (leges barbarorum) were, in many ways, the product of Roman influence. Throughout the early middle ages, as various "Teutonic", or Germanic, tribes on the continent came into closer and more peaceful contact with the highly institutionalized civilizations surrounding the Mediterranean – chiefly the Roman empire – it was inevitable that they would be affected by the cultural influences emanating from the south. Many Germanic tribes and nations subsequently began to imitate the cultural and institutional facets of Roman civilization. Few of these imitations were so important or had such a profound impact on the nature of "barbarian" life as the adoption of writing, a technology which spread throughout the Germanic kingdoms hand-in-hand with Christianity, a religion based on literacy. Up to this point, the laws, or customs, of the barbarian nations of Northern Europe were essentially oral: they were occasionally recited publicly, and relied for their continuation upon word-of-mouth, and the memory, perhaps capricious, of those whose burden it was to remember them. With writing, however, it was possible to set the ancient customs of the Northern Europeans into a lasting and more or less fixed form, using ink and parchment. It was a general trend among the Germanic tribes of Europe that adaptation of the Roman system of writing was soon followed by the production of a national code of laws. It was inevitable, too, that, in imitating the Roman practice of writing down law, facets of Roman law and jurisprudence would influence these new Germanic codes. The numerous legal and customary statements which make up the earliest written Germanic law codes from the continent are testament to the influences of Roman language and Roman law, as each was written in Latin (a foreign language) and was often significantly influenced by Byzantine Emperor Justinian's great legal code.