Elbe tunnel most commonly refers to:
Elbe Tunnel (1975) in Hamburg, which is part of Bundesautobahn 7. Elbe Tunnel (1911) in Hamburg, which connects St. Pauli and Steinwerder.
It may also refer to:
A tunnel projected near Glückstadt, which will be part of Bundesautobahn 20. A tunnel proposed as an alternative to the disputed Dresden Waldschlösschen Bridge.