Cumorah (/kəˈmɔːrə/) is a drumlin in Manchester, New York, United States, where Joseph Smith said he found a set of golden plates which he also said he translated into English and published as the Book of Mormon.

In the text of the Book of Mormon, "Cumorah" is a hill located in a land of the same name, which is "a land of many waters, rivers and fountains". In this hill, a Book of Mormon figure, Mormon, deposited a number of metal plates containing the record of his nation of Nephites, just prior to their final battle with the Lamanites in which at least 230,000 people were killed.

Early Latter Day Saints believed that the Cumorah in New York was the same Cumorah described in the Book of Mormon as taught by Assistant President of the Church Oliver Cowdery in a formal letter (Letter VII) he published in the July 1835 Messenger and Advocate and reprinted several times at the direction of Joseph Smith. Joseph Smith explained that Moroni identified the hill as Cumorah before Joseph found the plates (Doctrine and Covenants 128:20), which was corroborated by other historical sources. In the early 20th century, scholars from the Reorganized Church of Jesus Christ of Latter Day Saints (RLDS Church) and the Church of Jesus Christ of Latter-day Saints (LDS Church) began to speculate that there were two such hills and that the final battle in the Book of Mormon took place on a hill in southern Mexico, Central America, or South America. The LDS Church has no official position on the matter, and while these hypotheses are not held by some leaders and members of the LDS Church, they are firmly espoused by others.

In the official account of Joseph Smith it is stated that Manchester, Ontario County, New York, is the location of the encounter with Angel Moroni.

The hill named Cumorah in Manchester, New York is where the prophet discovered the golden plates which contained the writings of the Book of Mormon. Smith wrote: "On the west side of this hill, not far from the top, under a stone of considerable size, lay the plates, deposited in a stone box."

Joseph Smith visited the hill each year on September 22 between 1823 and 1827 and said he was instructed by a "holy messenger", whom the prophet identified as the Angel Moroni. The prophet was finally allowed to take the record on September 22, 1827. Eleven other men gave written testimony that they had also seen the plates and held them in their hands.

The hill, which was known as Cumorah by the Smith family prior to 1829, is situated a few miles from Smith's boyhood home on a farm that was then owned by a local farmer, Alonzo Sanders. This farm was 4 miles (6.4 km) south of Palmyra, on the main road toward Canandaigua from Palmyra to Manchester, and is not far from Carangrie Creek and the Clyde River. According to geologists, the hill was formed during the retreat of the Ice Age glaciers, and it rises approximately 110 feet (34 m) above the surrounding valley floor.

Since 1829, the Latter Day Saints have called the hill "Cumorah", and local non-members have derogatorily called it "Mormon Hill" or "Gold Bible Hill". The hill has also been called "Inspiration Point". The hill and surrounding land was purchased in the 1920s by the Church of Jesus Christ of Latter-day Saints under the direction of church president Heber J. Grant. The transaction involved two separate purchases: the purchase of the "Inglis farm"; and the purchase of the "Sexton farm". The Inglis farm consisted of 96 acres (39 ha) on both sides of the Canandaigua–Palmyra road and encompassed one third of the western edge of the hill. The 187-acre (76 ha) Sexton farm was purchased from the heirs of Pliny T. Sexton, who owned the "Mormon Hill farm" encompassing the remainder of the hill.