Octa may refer to:
Places Octa, Missouri Octa, Ohio
People Octa of Kent (6th century), king of Kent
Other uses Octa (unit), a proposed unit of information by Donald Knuth denoting 64 bit Office of the Chief Trade Adviser Orange County Transportation Authority Oregon-California Trails Association Oregon Cannabis Tax Act Overseas Countries and Territories Association Optical coherence tomography angiography, an imaging modality for visualizing vasculature Octa-, a prefix meaning eight Land Rover Defender OCTA, a high-performance luxury SUV
See also Okta (disambiguation)