IWG

IWG may refer to:

Inch of Water Gauge, pressure unit corresponding to 2.54 cmH₂O or approximately 249 Pa
"I Wanna Go", song by Britney Spears
Interagency Working Group such as the
- Nazi War Crimes and Japanese Imperial Government Records Interagency Working Group
- Interagency Working Group on Youth Programs
IWG plc, a global provider of office space
Irish Workers' Group

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