OMT

OMT may refer to:

In economics:
 * Outright Monetary Transactions, which denotes the European Central Bank's purchases of bonds issued by Eurozone member-states

In science:
 * O-methyltransferase, type of methyltransferase enzyme transferring a methyl group on a molecule

In technology:
 * OMT-G, configuration in object-based spatial databases
 * Object-modeling technique, language for software modeling and designing
 * Object model template, architecture for distributed computer simulation systems
 * Open microchip technology, the technology of implanting microchips in animals for research or tracking
 * Orthomode transducer, also polarisation duplexer, microwave duct component of the class of microwave circulators

In health and wellness:
 * Orofacial myofunctional therapy
 * Osteopathic manipulative treatment, hands-on application of manipulative techniques on the patient by a Doctor of Osteopathic Medicine
 * Ocular tremor, also ocular microtremor, type of eye tremor