Ihme (in its upper course: Wennigser Mühlbach) is a river of Lower Saxony, Germany. It is a left tributary of the Leine.

Ihme
The Ihme near the southern city boundary of Hanover
Location
Country	Germany
State	Lower Saxony
Location	Hanover Region
Physical characteristics
Source
• location	near Wennigsen
• elevation	70 m above sea level (NN)
Mouth
• location	In Hanover into the Leine
• coordinates	52°22′38″N 9°42′45″E / 52.3771°N 9.71245°E / 52.3771; 9.71245
• elevation	50 m above sea level (NN)
Length	26.2 km (16.3 mi) [1]
Basin size	111 km2 (43 sq mi) [1]
Basin features
Progression	Leine→ Aller→ Weser→ North Sea
Landmarks	Cities: Hanover Small towns: Ronnenberg, Wennigsen (Deister)
Population	500.000
Tributaries
• left	Hirtenbach, Schneller Graben
• right	Seniebach
Navigable	Schneller Graben to Leine
The confluence of the Ihme with the Leine (Leine from the right) Ihme in a flood ditch in Hanover, taking floodwater to the Leine. Right: flooded cycle path

The Ihme is 26 kilometres (16 mi) long. Its source is in the village Evestorf [de], a district of Wennigsen. After about 6 kilometres (4 mi), the Ihme reaches the city of Hanover, where it flows into the Leine. In order to protect the city center of Hanover from flooding, much of the water of the Leine is rerouted by a ditch into the Ihme. A bridge over the Ihme is named in memory of Benno Ohnesorg.

The Ihme gives its name to the village Ihme, that forms together with Roloven the district Ihme-Roloven [de; fr] of Ronnenberg.