OWC

OWC can refer to:


 * Office Web Components, a type of programmable control in Microsoft Office
 * Oil-water contact, the interface between layers of oil and water in hydrocarbon reservoirs
 * Open-wheel car, a car with its wheels outside of its main body
 * Open Windrow Composting, composting of waste in open-air windrows
 * Optical wireless communications
 * Oscillating water column, a wave power technology
 * Other World Computing, a computer hardware company specializing in Apple components
 * Overwatch Contenders, a professional esports league