O
- oak
- oath
- Obadiah
- Obadiah, Book of
- Obal
- Obed
- Obed-Edom
- obeisance
- Obelisks
- Obil
- Oboth
- Oded
- offense
- offering
- Og
- Ohad
- Ohel
- Oholiab
- Oholibamah
- oils
- oil-tree
- ointment
- old gate
- olive
- olive-tree
- Olives, Mount of
- Olympas
- Omar
- omega
- omer
- Omri
- On
- Onan
- Onesimus
- Onesiphorus
- onion
- Ono
- Onycha
- onyx
- open place
- Ophel
- Ophir
- Ophni
- Ophrah
- oracle
- order of Creation
- Oreb
- Oreb, The rock of
- Oren
- organ
- Orion
- Ornan
- Orpah
- orphans
- Osnapper, Asnapper
- osprey
- ossifrage
- ostrich
- Othni
- Othniel
- ouches
- oven
- owl
- ox
- ox goad
- Ozem
- Ozias
- Ozni