As An Abbreviation
- -Ing., an abbreviation for 'Doctor of Engineering' used in some European countries, e.g. Doktor-Ingenieur
- Index Nominum Genericorum, an index of all published generic names of plants covered by the International Code of Botanical Nomenclature
- ING, the official abbreviation for a member of the Ordre des ingénieurs du Québec (OIQ)
- Instituut voor Nederlandse Geschiedenis, Institute of Dutch History
- Isaac Newton Group of Telescopes, in La Palma, Canary Islands
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