Language Abbreviations and Acronyms
- OHPLOxford Handbook of Philosophy of Language
- OIOld Icelandic
- OIOld Irish
- OIAOld Ikdo-Aryan
- OIBECOxford International Business English Certificate
- OILOntology Inference Layer
- OISEOffice of Inclusion & Student Engagement
- OISEOxford Intensive School of English
- OJOld Japanese
- OJADOnline Japanese Accent Dcctionary
- OJMLOpen Journal of Modern Linguistics
- OKOld Kinderhook
- OKBCOpen Knowledge-Base Connectivity
- OLOntology Inference Layer
- OLOriginal Language
- OLOceanic Linguistics
- OLOfficial Lanauages
- OLOther Language
- OLACOpen Languages Archive Community
- OLBIOfficial Languages and Bilingualism Institute
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