Is nido ran is a legendary?

Nido Ran is not classified as a legendary Pokémon. Instead, it is a dual-type Poison/Ground Pokémon, introduced in Generation I. It evolves from Nidoran♂ and can further evolve into Nidorino and then Nidoking when exposed to a Moon Stone. Legendary Pokémon typically have unique stats, lore, and are not available in the standard wild encounters of the games.