The Saxons (Latin: Saxones) were a confederation of Old Germanic tribes. Their modern-day descendants in Lower Saxony and Westphalia and other German states are considered ethnic Germans (the state of Sachsen is not inhabited by ethnic Saxons; the state of Sachsen-Anhalt is, though, in its northern and western parts); those in the eastern Netherlands are considered to be ethnic Dutch; and those in Southern England ethnic English (see Anglo-Saxons). Their earliest known area of settlement is Northern Albingia, an area approximately that of modern Holstein.

Saxons participated in the Germanic settlement of Britain during and after the 5th century. It is unknown how many migrated from the continent to Britain though estimates for the total number of Germanic settlers vary between 10,000 and 200,000. Since the 18th century, many continental Saxons have settled other parts of the world, especially in North America, Australia, South Africa, South of Brazil and in areas of the former Soviet Union, where some communities still maintain parts of their cultural and linguistic heritage, often under the umbrella categories "German", and "Dutch".

Because of international Hanseatic trading routes and contingent migration during the Middle Ages, Saxons mixed with and had strong influences upon the languages and cultures of the Scandinavian and Baltic peoples, and also upon the Polabian Slavs and Pomeranian West Slavic peoples.

The pre-Christian settlement of the Saxon people originally covered an area a little more to the northwest, with parts of the southern Jutland Peninsula, Old Saxony and small sections of the eastern Low Countries (Belgium and the Netherlands). During the 5th century AD, the Saxons were part of the people invading the Romano-British province of Britannia. One of the other tribes was the Germanic Angles, whose name, taken together with that of the Saxons led to the formation of the modern term, Anglo-Saxons.