IOW

IOW or iow may refer to:

Language

• Chiwere language, a Siouan language of the United States with ISO 639-3 code <code>iow</code>.
• Initialism of in other words.

Organisations

• InsideOUT Writers, an American prison reform organisation
• Leibniz Institute for Baltic Sea Research ()

Places

• Isle of Wight, an island in the English channel
• Iowa City Municipal Airport, Iowa, United States