- obsidan
- October
- off-white, it is
- oil, fish head
- oil, fish head
- okay
- old man
- old timers
- oldest
- on
- on
- on it
- on the other side of
- once
- one
- one (generic)
- one (human)
- one and a half
- one hundred
- one-eighth
- one-half
- one-quarter
- One-sided Wintergreen
- One-Sided Wintergreen
- onion
- only
- oolichan
- oolichan oil
- open your mouth, you (1)
- operation, he had an
- operation, I am going to have an
- operation, I had an
- orange, it is
- orphan
- other (human)
- other side, on the
- otter
- otter
- Otter, Canadian River
- Otter, Canadian River
- outhouse
- outhouse
- outside
- Oval-leaved Blueberry
- over there
- overcoat
- overflow
- owl