RS

RS is a common abbreviation for Pokémon Ruby and Sapphire Versions. It can also be taken to mean:

• The Ruby & Sapphire arc of Pokémon Adventures
• The Pokémon Ruby-Sapphire manga, known as Pocket Monsters RS in Japan
• The EX Ruby & Sapphire expansion of the Pokémon Trading Card Game
• The Roaring Skies expansion of the Pokémon Trading Card Game