RWI
RWI may refer to:
- Rusty Wallace, Inc, former name of Rusty Wallace Racing, a US NASCAR racing team
- Rheinisch-Westfälisches Institut für Wirtschaftsforschung, a German economics research institute in Essen
- IATA code of Rocky Mount–Wilson Regional Airport
- Rossby wave instability, concept related to astrophysical accretion discs
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