Encyclopedias, Almanacs, Transcripts, and Maps
- Orione, Luigi, Bl.
- Orlah
- Orland, Hershl
- Orland, Yaakov
- Orléans-Longueville, Antoinette d’
- Orlev, Uri
- Orlik, Emil
- Orlikow, David
- Orlinsky, Harry Meyer
- Orloff, Chana
- Ormian, Ḥayyim
- Ormódy, Bertalan
- Ornest, Ota
- Ornitz, Samuel Badisch
- Ornstein, Abraham Frederick
- Ornstein, Jacob Meshullam ben Mordecai Ze'ev
- Ornstein, Leo
- Ornstein, Leonard Salomon
- Ornstein, Mordecai Ze'ev ben Moses
- Orobio de Castro, Isaac