CTP has several possible meanings:

• Certified Treasury Professional, a certification awarded by the AFP (Association for Financial Professionals)
• Certified Turfgrass Professional, a professional certification of the Professional Landcare Network
• Certified Turnaround Professional
• Community Technology Preview - software preview release

From Microsoft... "Note on Community Technology Previews: Community Technical Preview (CTP) builds do not go through the same rigorous testing that beta builds undergo. While betas receive a much higher level of testing and feature work, CTPs are intended to expose developers to the latest working build. CTPs are therefore unsupported, prerelease software and there are some precautions you should take. Please read the latest Readme and Installation Guides before you download or install prerelease software."

• Computer to plate (CtP) is an imaging or prepress technology in modern lithographic printing. In this technology, an image created in a Desktop Publishing (DTP) computer file is output directly to a printing plate.
• Confederación de Trabajadores del Perú
• Conformance Testing Program operated by the Storage Networking Industry Association
• Convergence Technologies Professional is a vendor-neutral certification that is designed to validate skills in implementing convergence technology solutions (data, telephony, network).
• Cumhuriyetçi Türk Partisi (Republican Turkish Party) a political party in Cyprus.
• Cambridge Technology Partners, a software service firm, now part of Novell

CTP