Bärbel von Ottenheim, or Barbara von Ottenheim (1430–1484), was the mistress of Lord James von Lichtenberg, the last sovereign of Lichtenberg and bailiff of Strasbourg. She is the model of a famous portrait sculpture.
At the death of James von Lichtenberg in 1480, she became the main beneficiary of his will. The other heirs, Simon IV of Zweibrücken-Bitsch and Philip II of Hanau-Lichtenberg, accused her of witch craft. She died in prison before the verdict, possibly of murder or suicide.