Celebrimbor is a fictional character In J. R. R. Tolkien's fantasy world of Middle-earth, the son of Curufin, fifth son of Fëanor (the son of Finwë and his first wife Míriel).

In Tolkien's stories, Celebrimbor plays an important role as the maker of the Rings of Power. During the Second Age, he lived in the Elvish realm of Eregion. Under the guidance and instruction of the Dark Lord Sauron — who feigned good intentions, calling himself Annatar, the "Lord of Gifts" — Celebrimbor made sixteen rings: seven for the Dwarves, and nine for Men. But secretly, without Annatar's knowledge, Celebrimbor created the three Rings of the Elves, the greatest and fairest of the Rings of Power. These rings were thus free of Annatar's corrupting influence. Celebrimbor named the rings Vilya, Narya and Nenya after the principal Middle-earth elements of air, fire and water, respectively.

At this time, Annatar was secretly forging the One Ring which would enable him to rule Middle-earth. Annatar reassumed his role as the Dark Lord and placed the One Ring on his finger, claiming dominance over all the Rings of Power and their bearers. Celebrimbor and the Elves of Eregion defied Sauron by withholding the other rings from him. Sauron retaliated by attacking Eregion, laying waste to the realm. Celebrimbor was captured in the sack, and was forced under torture to disclose where the Nine and the Seven were held, but he would not reveal the whereabouts of the three Elvish rings. He had already sent the three rings away for safekeeping: Vilya and Narya to Gil-galad in Lindon, and Nenya to Galadriel in Lothlórien. Sauron captured the lesser rings and used them as instruments of evil in later years, particularly against Men. Celebrimbor died from his torment, the last direct descendant of the line of Fëanor.