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