Jump to navigation Jump to search
Nidda or Niddah could refer to:
- Niddah, a concept in Judaism, name for any woman during menstruation, or a woman who has menstruated and not yet completed the associated requirement of immersion in a mikveh (ritual bath)
- Niddah (Talmud), a tractate in the Mishna and Talmud, on the Halakha of Niddah in the order of Mishnah Tohorot.
- Nidda, Hesse, a town in Germany
- Nidda (river), a river in Germany