IOR
IOR is an abbreviation for:
- Index of refraction, see refractive index
- Inhibition of return ( " inhibition of return" ), a phenomenon of the eye movement
- International Offshore Rule, Rules for the construction of racing yachts
- Interoperable Object Reference, an object reference to a CORBA Object
- Istituto per le Opere di Religione, bank owned by the Holy See ( " Vatican Bank")
- Disambiguation
- Abbreviation