CTF can mean:
CTfastrak (constructed as the New Britain-Hartford Busway) is a regional bus rapid transit system currently operating between Union Station in Hartford and Downtown New Britain station in New Britain in central Connecticut.
Chromosome transmission fidelity protein 8 homolog is a protein that in humans is encoded by the CHTF8 gene.
ctfmon (ctfmon.exe) is a process used by Microsoft Office to activate the Alternative User Input Text Input Processor (TIP) and also the Microsoft Language Bar.
The CLIC Test Facility 3 (CTF3) at CERN aims to demonstrate the feasibility of the Compact Linear Collider.
The CTFD PortoGaia (Centro de Treinos e Formação Desportiva PortoGaia; English: PortoGaia Sports Training Center) is a football training complex located in Vila Nova de Gaia, Portugal, that is used by the senior, reserve and youth teams of FC Porto.
CTF, Service Research Center is a multidisciplinary research center focusing on service management and value creation through service, and is a part of Karlstad University in Sweden.
Combined Task Force 151 (CTF-151) is a multinational naval task force, set up in 2009 as a response to piracy attacks in the Gulf of Aden and off the eastern coast of Somalia.