Hainaut or Hainault coud refer tae:
- Hainaut (province), the modren Belgian province, pairt o Wallonie
- Coonty o Hainaut, the feudal entity creatit in 1071 on the order o Henry IV, owerlappin pairt o northren Fraunce wi the modren Hainaut province o Belgium
- French Hainaut, a pairt o the umwhile province Flanders an Hainaut
- Hainault, Lunnon, the suburb. This name is no derivit frae the French/Belgian province, but actually frae Auld Inglis "Hyneholt".