The Kiffing is a range of hills, relatively small in area and up to 344.1 m above sea level (NN), in the district of Kassel in the German state of Hesse.
The Kiffing hills in the extreme north of Hesse belong to the southern ranges of the Weser Uplands.
To the northeast and north they are passed by the lower reaches of the river Schwülme, to the southwest and west by a stretch of the Upper Weser, beyond whose western banks looms the Reinhardswald.
The Kiffing lies between Wahlsburg to the northwest, Uslar to the northeast and Oberweser to the south.
The Kiffing, which attains at height of up to 344.1 m (1,129 ft) at the Heuberg, and whose eastern section belongs to the State Forest of Bad Karlshafen, is a heavily wooded region, apart from its western and northeastern foothills.