Encyclopedias, Almanacs, Transcripts, and Maps
- Oleśnicki, Zbigniew°
- Olevski, Buzi
- Olga, St.
- Olgin, Moshe J.
- Olgopol
- Olier, Jean Jacques
- Oliger, Livarius
- Oliphant, Laurence°
- Olitski, Jules
- Olitzki, Aryeh Leo
- Olitzky
- Olitzky, Kerry M.
- Oliva, Abbey of
- Olivaint, Pierre
- Oliver Y Fullana, Nicolás de
- Olivero, Betty
- Olivétan, Pierre Robert
- Olivetti
- Oliveyra, Solomon ben David de
- Olkusz