Stephanie Dorothea Christine Wehner (born 8 May 1977 in Würzburg) is a German physicist and computer scientist. She is the Roadmap Leader of the Quantum Internet and Networked Computing initiative at , Delft University of Technology. She is also known for introducing the noisy-storage model in quantum cryptography. Wehner's research focuses mainly on quantum cryptography and quantum communications. Wehner, together with Jonathan Oppenheim, discovered that the amount of non-locality in quantum mechanics is limited by the uncertainty principle.