****** PAP Password Authentication Protocol
***** PAP Papanicolaou (Pap test or Pap smear; named for George Papanicolaou)
***** PAP Polska Agencja Prasowa (Polish News Agency)
***** PAP Patient Assistance Program
***** PAP Printer Access Protocol
***** PAP People's Action Party (Singapore)
***** PAP Positive Airway Pressure
***** PAP Picture and Picture
***** PAP People's Armed Police (China)
**** PAP Pulmonary Artery Pressure
**** PAP Pulmonary Alveolar Proteinosis
**** PAP Purple Acid Phosphatase
**** PAP Pre-Authorized Payment
**** PAP Pulmonary Arterial Pressure
**** PAP Personal Auto Policy
**** PAP Performance Assurance Plan
**** PAP Prostate Acid Phosphatase
**** PAP Push Access Protocol (WAP)
*** PAP Poverty Alleviation Programme
*** PAP People's Alliance Party (Solomon Islands)
Protected Audio Path (Microsoft)
*** PAP Peruvian Aprista Party
*** PAP Public Access Profile
*** PAP Page Avec Publicité (French: Page with Ads)
*** PAP Priority Action Programme
*** PAP Prospective Adoptive Parent
*** PAP Programme d’Aide à la Publication (Publishing Aid Programme)
*** PAP Pedigree Analysis Package
*** PAP Packet-Level Procedure
*** PAP Personnel Assurance Program
*** PAP Private Access Provider
*** PAP Program Action Plan
*** PAP Product Assurance Plan
*** PAP Performance Assessment Plan
*** PAP Port Au Prince, Haiti - Mais Gate (Airport Code)
*** PAP Procedure And Practice
** PAP Primes in Arithmetic Progression (mathematics)
** PAP Personal Articles Policy (insurance)
** PAP Personnel Assistance Point
** PAP Programa de Asistencia al Paciente (Spanish)
** PAP Provider Access Point (ITU)
** PAP Philosophical Association of the Philippines (Philippines)
** PAP Packet Authentication Protocol
** PAP Poluautomatska Puška (Croatian: semi-automatic rifle)
** PAP Pharmacy Administration and Practice
** PAP Prêt d’Aide à l'Accession à la Propriété
** PAP Power Angle Profile
** PAP Performance Assurance Procedures
** PAP Peroxidase-Antiperoxidase smear test (medical term)
* PAP Palo Alto Philharmonic (California)
* PAP Payload Activity Plan
* PAP Pre-Allocation Porting
* PAP Pre-Approved Payments
* PAP Plant Administrative Procedure
* PAP Publicly Available Price (Cap)
* PAP Production Assurance Program
* PAP Plasma Arc Pyrolysis
* PAP Payload Attach Plate
* PAP Porcine Actinobacillus Pleuropneumonia
* PAP Process Assessment Procedure
