The pagus or gau of Hasbania was a large early medieval territory in what is now eastern Belgium. It is now approximated by the modern French- and Dutch-speaking region called Hesbaye in French, or Haspengouw in Dutch — both being terms derived from the medieval one. Unlike many smaller pagi of the period, Hasbania apparently never corresponded to a single county. It already contained several in the 9th century. It is therefore described as a "Groẞgau" (large gau), like the Pagus of Brabant, by modern German historians such as Ulrich Nonn.