OCF may refer to: Ocala International Airport, in Ocala, Florida Off Center Fed antenna, a dipole antenna with specific placement of feedpoint allowing multiple resonances in HF band Officers' Christian Fellowship, a nonprofit Christian parachurch organization which serves the U.S. Military Open channel flow, Flow of a fluid with its surface exposed to the atmosphere Open Cluster Framework, a clustering standard in computing Open Computing Facility, at University of California, Berkeley Open Connectivity Foundation, the biggest industrial connectivity standard organization for IoT. Open Container Format (also OEBPS Container Format) in the specification for E-Books in the ePUB format. OpenBSD Cryptographic Framework, an OpenBSD initiative to provide operating system support for cryptographic acceleration hardware. Operating cash flow, a term in financial accounting Optimum Coding in the Frequency Domain Ordinal collapsing function, a process used for reaching large ordinals in the field of set theory Ordnance Clothing Factory, Avadi, Shahjahanpur, India Oregon Country Fair, an annual event in Veneta, Oregon Original Composite Font, an early CJK font format by Adobe Systems Orthodox Christian Fellowship, a North American Orthodox campus ministry Our Common Future, a 1987 report from the United Nations World Commission on Environment and Development (WCED) Owens Corning Fiberglass, a manufacturer of fiberglass insulation Observable canonical form