Is dragonite legendary

No. Legendaries do not evolve. They can only change forms, like Shaymin. Hope this helps!

this is a question 2 that guy ^ but how come phanphy evolves into manphy? but mew does not evolve into mewtwo, watch the first movie, its made, but the way i see it no he is not a legendary

Disregard the first two answers. Dragonite is a Pseudo-legendarypokemon. The base stat line for all legendary pokemon is 580, any higher is considered legendary. Dragonite's base stats are 600. These are also pokemon who have a 3 stage evolution chain and their 3rd stage has a base stat line of 580 or higher.

So technically Dragonite is legendary, but not in the same way Lugia is.