RTT- Real Time Traffic, Real Time Text, Radiation Therapy Technologist, Rett Syndrome, Render to Texture, Real Time Thread, Real Time Technology, Round Trip Time, Real Time Tactics, Response Time Tracking, Request to Talk,Rock This Town, Radio Transmission Technology, Response to Terrorism, Remember the Titans, Resonant Tunneling Transistor, Real-Time Tomography, Rapid Technology Transition, Round The Twist, Ratio Threshold Test, Requirements Transition Team, Radio Teletypewriter, Round Trip Travel Time, Remember That Time, Response Time Test, Recapture Tactics Team=Please Do, Radiation Transport Theory, Right-Tailed Test.

PPU- Palestine Polytechnic University, Prime Power Unit, Peace Pledge Union=peace exists in different forms. The purest is the one We have, me, my second family and my daddies. Then there is different kinds of peace. Physical Planning Unit, Powerplay Unit, Peoples Potential Unlimited, Pending Pick Up, Please Pick Up, Priority/Primary, Prison Reform International, Progressive Renal Insufficiency, Progressive Routing Indicator, Performance Registrar Inc. Preliminary Rifle Instruction, Peopleclick Research Institute, Preemptive Repeat Identical, Polarity Realization Institute, Planet Repair Institute, Photochemical Reflectance Index, Prisoner Reentry Initiative=no not for me, Planning, Review, and Inspection, Probability of Receiving an Impression, Paranormal Research Institute, Power Resources International, Inc, Professional Recruiting International

PAA- Positive Aquaculture Awareness, Penetrability Analysis Application, Procurement of Ammunition, Army, Presbyterians for Addiction Action