Organizational Process Definition 
Operations Planning Division 
optical path difference 
Office of Program Development 
Obnoxious Personality Disorder 
Officer Professional Development 
One Per Desk 
Operand 
Organization Process Definition 
outpatient department 
Oakdale Police Department 
Oakland Police Department 
Oberlin Police Department 
Oberpostdirektion 
obstructive pulmonary disease 
Ocala Police Department 
Ocean Physics Division 
Oceanside Police Department 
oculopharyngeal dystrophy 
O'Fallon Police Department 
Office for Persons with Disabilities 
Office of Policy Development 
Officer Personnel Directorate 
Ogden Police Department 
Ogdensburg Police Department 
Ola Police Department 
Olathe Police Department 
Olney Police Department 
Olpadronate 
Olympia Police Department