ASO
Assistant Section Officer

CEO
Chief Executive Officer

CFO
Chief Financial Officer

CIO
Chief Information Officer

CO
Commanding Officer

commissioned
commissioned officer

DPO
Data Protection Officer

FO
Field Officer

GOC
General Officer Commanding

GOC-in-C
General Officer Commanding in Chief

GSO
General Staff Officer

gunnery
gunnery officer

immigration
immigration officer

inspecting
inspecting officer

liaison
liaison officer

MOH
Medical Officer of Health

NCO
noncommissioned officer

non-resident
nonresident medical officer

noncom
noncommissioned officer

OBE
Officer of the (Order of the) British Empire

OC
Officer Commanding

officer
commissioned officers

presiding
presiding officer

preventive
preventive officer

probation
probation officer

ranking
the ranking officer

relieving
relieving officer

returning
returning officer

revenue
revenue officer

sheriff
sheriff officer