Hamaland (also Hameland) was a medieval Carolingian vassal county in the east of the modern-day Netherlands.

Hamaland and the Chamavi had since late antiquity been ruled by independent kings, before being subdued by the Carolingian Franks.

From the 9th century there was a Duchy of Hamaland, the rulers of which owned large parts of the middle, east and north of what is now the Netherlands.

The same family also owned a large part of German Münsterland and more southerly estates, probably around Nassau.

Other lineages of the Hama-family became prominent in the Duchy of Cleve and the Bishoprics of Utrecht and Münster.