IOW may stand for:
- Isle of Wight (frequently as IoW)
- "in other words" ( Internet slang abbreviation)
- The German abbreviation for the Leibniz Institute for Baltic Sea Research
- ISO 639-3 code of the Iowa-Oto language
- Integrated optical waveguide
- Intelligence Operations Workstation ( USMC)
Usage examples of "iow".
It is situate in the Iowen Languedoc, between Nismes and the Rhone, and still boasts a collegiate church of the foundation of Raymond, (Melanges tires d'une Grande Bibliotheque, tom.