In Japan, is a Pokémon species in Nintendo and Game Freak's Pokémon franchise. Designed by Ken Sugimori, their name is a combination of the words "bulb" and "dinosaur." First appearing in Pokémon Red and Blue as a Starter Pokémon, they later appeared in subsequent sequels, spin-off games, related merchandise, and animated and printed adaptations of the franchise.

Known as the Seed Pokémon, Bulbasaur can survive for days without eating because the bulb on its back stores energy. Bulbasaur is a central character in the anime, being one of Ash's main Pokémon for the first season, and a different one later being obtained by May. It is featured in various manga, and is owned by main protagonist Red in the Pokémon Adventures manga. Bulbasaur has been featured in varying pieces of merchandise, including toys and plush dolls.