The Dreifelder Weiher (also known as: Seeweiher) is a small lake in the northeastern part of the German federal state of Rhineland-Palatinate, which is part of the low mountain range of the Westerwald. It is one of the seven lakes of the Westerwald Lakes. With an area of 123 hectares, it is the largest pond of the Westerwald Lake District.

Dreifelder Weiher
The Dreifelder Weiher in spring
Dreifelder Weiher is located in Rhineland-Palatinate
Dreifelder Weiher
Dreifelder Weiher
LocationRhineland-Palatinate
Coordinates50°35′35″N 7°49′30″E / 50.59306°N 7.82500°E / 50.59306; 7.82500
Typenatural freshwater lake
Basin countriesGermany
Max. length1.16 miles (1.87 km)
Max. width0.48 miles (0.77 km)
Surface area123 hectares (300 acres)
Surface elevation410 metres (1,350 ft)
SettlementsDreifelden on southeast shore

The surface of the pond is located 410 metres above sea level.