Octa
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

See also
Okta (disambiguation)