Neot (died 31 July 877) was an English monk. Born in the first half of the ninth century, he lived as a monk at Glastonbury Abbey. He preferred to perform his religious devotions privately, and he later went to live an isolated life in Cornwall, near the village now called St Neot. His wisdom and religious dedication earned him admiration from the monks. He visited the Pope in Rome, who instructed him to found a monastery in Cornwall.

He did so, and because of his devotional qualities, he became famous, and attracted large numbers of pilgrims, and with them money. A number of miracles are said to have taken place involving him. Neot died on 31 July 877. His remains were kept at the monastery he had founded, and they attracted considerable numbers of pilgrims.

About 975 AD a monastery was founded at Eynesbury (in what is now the town of Saint Neots), and in order to increase the lucrative visits of pilgrims, Neot's remains were abstracted from Cornwall without permission, and lodged at Eynesbury. The anticipated public attention followed, and the district around the priory and monastery became known as St Neots: that is the name of the chief town there now. Controversy arose later as to whether Neot's remains were truly at the Priory, but this was confirmed by Anselm, the Prior of the French Abbey of our Lady of Bec, in Normandy, which was the superior institution to Eynesbury and St Neots after the Norman Conquest. Anselm took Neot's jawbone back to Bec.

During the reign of King Henry VIII, the Dissolution of the Monasteries took place and the priory and monastery at St Neots were probably destroyed. No further report is made of the location of Neot's remains to this day. He is remembered by the names of the town of St Neots and the Cornish village of St Neot; the parish church of Poundstock in Cornwall was also dedicated to him until 1970. The parish church in St Neot has a medieval stained glass window depicting the miracles. His feast day is 31 July.

Neot was born into a minor branch of the West Saxon royal house, in the first half of the ninth century, somewhere in Wessex. Neot's father was named Ethelwulph. In early life he was under pressure to become a soldier, but when he was old enough, he devoted himself instead to a religious life. As a young man therefore, he became a novice monk, living in Glastonbury Abbey, about the middle of the ninth century. He was extremely studious.

He is likely to have been given an Anglo-Saxon name by his parents, but this is not recorded. The word neophyte was commonly used at the time for individuals who had newly undertaken religious vows, and Gorham speculates that he might have been called "Neophytus", the Latin form of neophyte, at the monastery by monks who noticed his application to religiosity. In time, this might have been abbreviated to "Neotus", the Latin form of the name by which we know him now.

He was admired for his literary attainments by the other monks; and he was known for his humility and religious devotion. In addition to the religious observances prescribed by the monastery, he often awoke in the middle of the night and went to the chapel secretly to pray, in the disguise of a penitent, returning at dawn to continue the ordinary monastic routine. In due course he was admitted to Holy orders, and later he was made Sacristan of the Abbey. The fame of his scholarship and devotion attracted many pilgrims from all parts of the country, who went to Glastonbury to receive the benefit of his wisdom.

It was while he was at Glastonbury that the miracle of the door lock, described below, took place.