Ellbogensee (German, 'Elbow Lake') is a lake in the Mecklenburg Lake District, in Germany. Although most of the lake is in the district of Mecklenburgische Seenplatte in the state of Mecklenburg-Vorpommern, a portion of its southern shore is in the state of Brandenburg. It has a distinctive shape, reflecting its name.

Ellbogensee
Ellbogensee
Location	Mecklenburgische Seenplatte, Mecklenburg-Vorpommern
Coordinates	53°12′26″N 13°02′15″E / 53.20722°N 13.03750°E / 53.20722; 13.03750
Primary inflows	River Havel
Primary outflows	River Havel
Basin countries	Germany
Surface area	1.55 square kilometres (0.60 sq mi)
Max. depth	17 metres (56 ft)
Surface elevation	54.8 metres (180 ft)

The lake has an elevation of 54.8 metres (180 ft) and a surface area of 1.55 square kilometres (0.60 sq mi).

The navigable River Havel flows through the Ellbogensee, entering it at Priepert via a 0.6-kilometre (0.37 mi) long channel from the Großer Priepertsee to the north, and exiting via a 0.3-kilometre (0.19 mi) long channel to the Ziernsee to the east. At Strasen, at the western end of the lake, a canal and lock gives access to the Großer Pälitzsee, forming the first link of the Müritz–Havel–Wasserstraße. Navigation is administered as part of the Obere–Havel–Wasserstraße.