CTF may refer to:
Finance Canadian Television Fund, financing mechanism Child Trust Fund, a UK child savings scheme Clean Technology Fund, of the World Bank Counter terrorism financing
Organizations and associations Cambridge Theological Federation, association of colleges etc. in Cambridge, England Canadian Taxpayers Federation Canadian Teachers' Federation Children's Tumor Foundation, United States, supports those with neurofibromatosis/schwannomatosis Cyprus Tennis Federation Chow Tai Fook, Hong Kong based conglomerate
Science and technology Capture the flag (cybersecurity), an educational exercise in computer security Charge trap flash, semiconductor memory technology Chlorine trifluoride, a highly corrosive chemical Collaborative Translation Framework, a platform designed by Microsoft to improve machine translation through (possibly crowdsourced) user contributions Computer to film, an imaging technology used in lithographic printing Contrast threshold function, in physiological imaging Contrast transfer function, in general imaging Controlled thermonuclear fusion CTF, an undocumented Windows protocol involved with the Microsoft Text Services Framework Cut-through forwarding, a methodology used in network hardware
Transport Catford railway station (National Rail station code), London, England Coatepeque Airport (IATA code), Guatemala
Other uses Capture the flag, a traditional outdoor game often played by children Colorado tick fever Commander, Task force Controlled Traffic Farming, a soil protection driving strategy Correctional Training Facility at Soledad, California