Oracle Certified Professional 
oral contraceptive pill 
Office of Commercial Programs 
Operating Control Procedure 
Office of Civilian Personnel 
Onchocerciasis Control Program 
open circuit potential 
Operational Capability Plan 
Operational Checkout Procedure 
Operational Command Post 
operational configuration processing 
Operations Control Panel 
Operator Control Panel 
Optical Control Plane 
oral contraceptive pills 
Output Control Pulse 
Overland Common Point 
Oasis Charter Public 
Object Connecting Protocol 
Observable Critical Process 
observable critical processes 
Obstacle Clearance Panel 
obstructive cholestasis during pregnan… 
Occupational Completion Point 
Occupational Completion Points 
oceanic clearance processor 
octacalcium phosphate 
ocular cicatricial pemphigoid 
Office of Central Programs 
Office of Combination Products