Do Mormons believe they descend from Indians?

Yes. Most members of the Church of Jesus Christ of Latter-day Saints (the "Mormon" church) believe that some or all of the Native Americans descend from three groups described in the Book of Mormon

• the Nephites, Lamanites, and Jaredites. These were groups of

Israelites which left the Old World (the Jaredites at the time of the Tower of Babel, the Nephites and Lamanites at the reign of Zedekiah).