IOR

IOR may refer to:

Organisations Independent Order of Rechabites, promoting alcohol abstinence I.O.R. (Întreprinderea Optică Română), optics company of Romania IOR (formerly Inland Oil Refiners), owner of the Eromanga Refinery in Australia Institute for the Works of Religion, a Vatican financial institution Institute of Refrigeration, a UK scientific charity and membership organisation

Science and technology Inclusive or, in logic Index of refraction, in optics Inhibition of return, a phenomenon in visual perception Interoperable Object Reference, a reference to a CORBA or RMI-IIOP object

Other uses Importer of record, in import and export India Office Records, of the former administration of India

International Offshore Rule, an early handicapping system for yacht racing Istituto per le Opere di Religione (Institute for Religious Works), the "Vatican Bank"

Inishmore Aerodrome (IATA airport code), Ireland

See also Indian Ocean Rim Association (IORA)