The Angel Moroni is an angel whom Joseph Smith, founder of the Latter Day Saint movement, reported as having visited him on numerous occasions, beginning on September 21, 1823. According to Smith, the angel Moroni was the guardian of the golden plates buried near his home in western New York, which Latter Day Saints believe were the source of the Book of Mormon. An important figure in the theology of the Latter Day Saint movement, Moroni is featured prominently in its architecture and art. Besides Smith, the Three Witnesses and several other witnesses also reported that they saw Moroni in visions in 1829.

In Abrahamic religious traditions and some sects of other belief-systems like Hinduism and Buddhism, an angel is a heavenly supernatural or spiritual being. In monotheistic belief-systems, such beings are under service of the supreme deity.