Waginger See is a lake in the Alpine foothills, Bavaria, Germany.

Geologically, it forms one single lake with the Tachinger See, with which it is connected through a narrow strait at Tettenhausen.

The surface area of the Waginger See proper is 6.61 km2 (2.55 sq mi); combined with the Tachinger See it is 8.97 km2 (3.46 sq mi).

[1] Its elevation is 441 m (1,447 ft) and its drainage area is 163.66 km2 (63.19 sq mi).

Its primary inflows are Schinderbach, Höllenbach and Tenglinger Bach, and it is drained by the Götzinger Achen.