null - oner
- official misconduct
- official newspaper
- official notice
- official opinion
- official oppression
- official records
- Official Records Statute
- Official Register
- Official Reports as Evidence Act
- official rules
- official seal
- official trustee
- official use
- official visitors
- officiariis non faciendis vel amovendis
- officina justitiae
- officio
- officio coronatoris
- officious will
- Officit conatus si effectus sequatur