RS3

RS3 or RS-3 may refer to:

Automobiles

 * Audi RS3, a 2011–present German compact performance car
 * Baojun RS-3, a 2019–present Chinese subcompact SUV

Other

 * RS3 (sail), a windsurfing sail
 * ALCO RS-3, diesel locomotive built by American Locomotive Company and Montreal Locomotive Works
 * Aprilia RS Cube, also known as the RS3, a 2002–2004 Italian MotoGP race bike

Video games

 * Racing Simulation 3, a 2002 racing video game
 * Romancing SaGa 3, a 1995 role-playing video game
 * RuneScape 3, a 2013 fantasy massively multiplayer online role-playing video game

Other uses

 * Resistant starch RS3, a prebiotic starch formed when starch-containing foods are cooked and cooled