- PPAP(Pregnant Parenting Adolescent Program)
- PPARC((organization) Particle Physics and Astronomy Research Council, a major government-sponsored science agency in the United Kingdom, merged into the Science and Technology Facilities Council in 2007)
- PPASC((U.S.) Plans and Program Analysis Support Center)
- PPASSCCATAG("Proud Parents Against Singles, Seniors, Childless Couples And Teens And Gays", a fictional group formed by Marge Simpson)
- PPAT(Permanency Planning Action Team Meeting)
- PPB(Public Procurement Board)
- PPBA(Pacific Palisades Baseball Association)
- PPBE(Planning, Programming, Budgeting, and Execution)
- PPBERS(Program Performance and Budget Execution Review System)
- PPBES(Planning, Programming, Budgeting, and Execution System)
- PPBS(Preschool Play Behaviour Scale)
- PPC(Power Personal Computer)
- p.p.c.(to take leave [Fr. pour prendre congé])
- PPC4I(Power Projection Command, Control, Communications, and Computers Infrastructure)
- PPCC(Provisioning Production Contract Code)
- ppcf(Pounds Per Cubic Foot)
- PPCLI(Princess Patricia's Canadian Light Infantry (regiment))
- PPCT(Planning and Programming Control Techniques)
- PPD(Personal And Professional Development)
