According to the Book of Mormon, Nephi (Hebrew נפי Nəp̄î; BoM Arabic نافي Nāfī) was a great prophet and was the son of Lehi, so sometimes called Nephi, son of Lehi. He lived around 600 B.C. He was the ancestor of the race of people known as the Nephites, who lived in the Americas from around 590 B.C. to 400 A.D., when they were destroyed by the Lamanites because of their wickedness.

Another Nephi lived around the time of Christ, and he was a descendant of Lehi as well. This Nephi was the son of Helaman. Nephi also had a son who was called Nephi after him.

There was also a region called the Land of Nephi, and a City of Nephi.

Also see the First, Second, Third, and Fourth Book of Nephi.