This is a list of all the Pokémon from Generation 3 (Ruby, Sapphire, FireRed, LeafGreen & Emerald). It includes the base stats of every new Pokémon and form introduced. List of new Pokémon introduced in Gen 3 (Ruby/Sapphire/FireRed/LeafGreen/Emerald) along with their stats.

National Pokédex | 001-151 | 152-251 | 252-386 | 387-493 | 494-649 | 650-721 | 722-809 | 810-905 | 906-1025 This is a list of all the Pokémon from Generation 3. There are 135 Pokémon in this generation. Click the image to go to the Pokédex for the latest games.

From Generation V to Generation VII, no Pokémon have gained an evolution or pre-evolution to make them into a three-stage evolution line. In Generation VIII, Pokémon were given new evolutions. However, they are also regional evolutions. The most common type among three-stage evolution lines is the Grass type, being present in 18 different lines.

Pokémon which evolve into a Pokémon of a previous generation, instead of from it, are always baby Pokémon. Conversely, the only baby Pokémon introduced alongside their evolved form are Togepi, Riolu, and Toxel; the rest were introduced in generations after their evolved form was.