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- Koi or Kevi
- Koidanov
- Koidanovo
- Koidonover (Kaidanover), Aaron Samuel ben Israel
- Koidonover (Kaidanover), Ẓevi Hirsch
- Koigen, David
- Koila
- Kojetin
- Kojève, Alexandre
- Kokand
- Kokesch, Ozer
- Kokhav Yair
- Kokhavi (Estella), David ben Samuel
- Kokovtsov, Paul Konstantinovich°
- Kol (Kolodny), Moshe
- Kol Bo
- Kol Mevasser
- Kol'tsov, Mikhail
- Kolarovgrad
- Kolatch, Alfred Jacob