The Toxandri (or Texuandri, Taxandri, Toxandrians etc.) were a people living at the time of the Roman empire. Their territory was called Toxandria, Toxiandria or Taxandria, a name which survived into the Middle Ages. It was roughly equivalent to the modern Campine (Dutch Kempen) geographical region of northeastern Flanders and southern Netherlands. In modern terms this covered all or most of North Brabant, the east of Antwerp Province, and the north of Belgian Limburg.
Their name is also preserved in modern placenames such as Tessenderlo, which is in the modern Belgian province of Limburg where it borders upon the provinces of Antwerp and Flemish Brabant.
Pliny the Elder in his Naturalis Historia reported that they were divided into "various peoples with many names". He placed them at the extreme edge of Gallia Belgica, "beyond" the River Scaldis (modern Scheldt) which apparently separated them from the Menapii. This means that the Toxandria were either within, or very close to, the part of the river delta frontier area of Belgic Gaul, that later became part of Roman "Lower Germany".
From military records around the empire it appears that the Texuandri may have formed at least one administrative district or "pagus" which contributed troops to Roman armies, but it appears to be associated with more than one higher level district. One is the Civitas Tungrorum, the civitas of the Tungri, but there also seems to be an association with the civitas of the Nervii, to the west. The modern town of Tongerloo, named after the Tungri, is very close to Tessenderlo, but actually further from the city of the Tungri which is modern Tongeren. The relationship between the Tungri and Toxandri is unclear.