English abbreviations from oilrig to oj
- OILRIG (Oxidation Is Losing, Reduction Is Gaining)
- OILS (Open Integrated Learning System)
- OIM (Offshore Installation Manager)
- OIN (Oversight Information Network)
- OINP (Over Issue News Paper)
- OIO (Object Input/ Output)
- OIO&T (Ohio Institute of Photography and Technology)
- OIOC (Oriental & India Office Collections (in the British Library))
- OIP (Open Internet Platform)
- OIPE (Office of Institutional Planning and Effectiveness (Western Carolina University))
- OIQ (Olympia Institute Quarterly)
- OIR (Okushiri Airport)
- OIRA (Office of Information and Regulatory Affairs)
- OIRT (Organisation International de Radio et Télévision)
- OIS (Obstacle identification surface)
- OISC (One Instruction Set Computer)
- OISE (Ontario Institute for Studies in Education (University of Toronto))
- OISS (Office for International Students and Scholars)
- OIT (Oita Airport)
- OITD (Office of International Training and Development (Clark Atlanta University))
- OIU (Operator Interface Unit)
- OIV (Organizzazione Internazionale della Vigna e del Vino (International Organisation of Vine and Wine))
- OIW (Our Indian Wards (by George W. Manypenny, published in 1880))
- OIZ (Bizerte-Sidi Ahmed Air Base)
- oj (Anishinaabe language (Ojibwa) (ISO 639-1 code))
