Zwischenahner Meerⓘ is a lake in Ammerland, Lower Saxony, Germany.

[1] The Zwischenahner Meer is navigable, and regular ferry services began in 1874.

The three ships run on regularly scheduled routes between the different landing piers along the lakeside.

[2] Sailing, boating, and other recreational water sports are also popular past times.

The lake has made Bad Zwischenahn a very popular tourist destination, as the town hosts numerous spa facilities.