303

303 may refer to:

Pokédex number

• #303 Mawile, in the National Pokédex
• #303 Krookodile, in the Alola Pokédex in Ultra Sun and Ultra Moon
• #303 Copperajah, in the Galar Pokédex
• #303 Noibat, in the Paldea Pokédex

Animation

• Ready, Willing, and Sableye, the 303rd episode of the Pokémon animated series

Manga

• Never Spritz a Knotty Sudowoodo, chapter 303 in the Emerald arc of Pokémon Adventures