Maritime Patrol Aircraft 
Multiple Project Assurance 
Maritime Patrol Aviation 
Master of Public Administration 
Magnetospheric Plasma Analyzer 
Motivation Problem analysis 
Marine Protected Area 
Medical Power of Attorney 
Maryland Port Administration 
mission and payload assessment 
Mission Payload Assessment 
MOPAR/AUTOPAR 
Maclura pomifera agglutinin 
Maintenance Prompter Application 
Major Projects Association 
Management Protocol Adapter 
Maryland and Pennsylvania Railroad 
Mass Processing Analysis 
Master in Public Administration 
Master of Professional Accountancy 
Master of Professional Accounting 
Megapascal 
Member of Parliamentary Assembly 
Meridian Photometry Array 
Metropolitan Planning Area 
Microsoft Product Activation 
Military Personnel Army 
mission planning agent 
Multiple Payload Adapter 
Multiple-Period Average