No, Sauron is.
Addendum:
This is explicitly stated in Rivendell. After Frodo recovers from his shoulder wound, he is greeted as "the Lord of the Ring" by Pippin. Gandalf, who is also present, immediately rebukes Pippin for using that term and states that the only lord of the ring is Sauron. Frodo might be able to resist the power of the ring, but ultimately, he could never master the One Ring.
Chat with our AI personalities
Glorfindel is an Elven Lord from a house of princes, however, he is not the most powerful elf, and not the lord of all Elves.
The highest ranking elves mentioned in The Lord of the Rings are probably Elrond, Galadriel, and Celeborn.
No, Gandalf was not an elf. He is a Maia, a spirit sent to Middle Earth by the Valar in the Undying Lands, to help the people fight against Sauron. He, and the four others sent were sometimes known as Istari or Wizards.
No, Gandalf isn't the Lord of the Rings. That title belongs to the dark lord Sauron.
His known names, usually given to him by various peoples: -Gandalf ("Elf of the Wand", though he is not an elf) by various peoples. Titled as "Gandalf the Grey" and "Greyhame" or later "Gandalf the White". -Mithrandir (Sindarin "Grey Pilgrim", "Grey Wanderer") from the Elves, also used by the Men of Gondor. -Tharkûn, from the Dwarves. -Incánus, from somewhere in the South. -Olórin, which he was called in the West in Aman. He has also been called various other things, some of therm derogatory, although they are not used as proper names.
Frodo knows Gandalf because Gandalf was like Bilbo (Frodo's grand-uncle) guardian on Bilbo's adventures. Now, Frodo knows Gandalf through Bilbo.
He proves himself useful on several occassions. He rescues them from the spiders in Mirkwood. His warning allowed Gandalf to escape and rescue them in the Goblin Cave. He gets them out of the elf dungeon in Mirkwood. And then he gets them into the Mountain.
Gandalf was known by different names to different peoples: Gandalf to Northern men, Mithrandir to the elves and Dunedain (as in Gondor), and Tharkun to the Dwarves. Olorin was his true name as a Maia.
The hobbits of the Shire might describe describe Gandalf as wise, powerful, and fun-filled.(Gandalf is over 3000 years old!)