Leofric (before 1016–1072) was a medieval Bishop of Exeter. Probably a native of Cornwall, he was educated on the continent. At the time Edward the Confessor was in exile before his succession to the English throne, Leofric joined his service and returned to England with him. After he became king, Edward rewarded Leofric with lands. Although a 12th-century source claims Leofric held the office of chancellor, modern historians agree he never did so.

Edward appointed Leofric as Bishop of Cornwall and Bishop of Crediton in 1046, but because Crediton was a small town, the new bishop secured papal permission to move the episcopal seat to Exeter in 1050. At Exeter, Leofric worked to increase the income and resources of his cathedral, both in lands and in ecclesiastical vestments. He was a bibliophile, and collected many manuscripts; some of these he gave to the cathedral library, including a famous manuscript of poetry, the Exeter Book. Leofric died in 1072; although his remains were moved to the new Exeter Cathedral which was built after his death, their location is no longer known and the current tomb does not mark his resting place.

Little is known about Leofric, as his cathedral town was not a centre of historical writing, and he took little part in events outside his diocese. Little notice was taken of his life and activities; only a few charters originated in his household and there is only one listing of gifts to his diocese. No official acts from his episcopate have survived, and there is just a brief death notice in the Leofric Missal, although no notice of his death occurs in the contemporary Anglo-Saxon Chronicle. He occurs as a witness to royal charters.

Leofric was probably born in Cornwall, and his parents were English. Because canon law required that a bishop be 30 years old when consecrated, it is likely that Leofric was born before 1016. The medieval chronicler Florence of Worcester referred to him as a Brytonicus, which presumably meant that he was a native of Cornwall. He had a brother, Ordmaer, who acted as his steward and administered the family estates. Leofric was educated in Lotharingia, and may have been brought up abroad. Leofric may have gone into exile either in 1013 when Sweyn Forkbeard, the king of Denmark invaded England or in 1016, when Sweyn's son Cnut became king of England. His education possibly took place at the church of St Stephen's in Toul, where the future Pope Leo IX was a canon from 1017 to 1024 and bishop after 1027.

Before Edward the Confessor became king of England, he was exiled to the continent. Leofric served as Edward's chaplain, although how or when exactly the two met is unknown. The historian Frank Barlow speculates that it may have been at Bruges in 1039. When Edward returned to England at the invitation of King Harthacnut, Edward's half-brother, Leofric accompanied him, witnessing charters during Harthacnut's lifetime along with Herman who later became Bishop of Sherborne. Leofric remained a close supporter and friend of Edward for the king's entire life. In 1044, Edward granted him lands at Dawlish in Devon.

Although a 12th-century monastic chronicler at Worcester called Leofric Edward's chancellor, this is not correct, as Edward had no chancellor at this time. Historians are divided on whether or not Edward ever had an official that could be called a chancellor, but they are agreed that Leofric did not hold such an office.

When Bishop Lyfing died in 1046, the king made Leofric Bishop of Cornwall as well as Bishop of Crediton. The two sees, or bishoprics, held by Lyfing became the see of Exeter in 1050 when Bishop Leofric moved his episcopal seat from Crediton to Exeter and combined it with Cornwall. The move of the see received the support of Pope Leo IX, and dates from 1051. Although Leofric had been a royal clerk before he became bishop, after his elevation he managed to avoid entanglement in the various disputes taking place between the king and Godwin, Earl of Wessex. Instead he spent his energies on the administration of his diocese, but remained on good terms with the king. Leofric's penitential, the Leofric Missal, still survives, and it includes a prayer for a childless king, which probably referred to King Edward.

The abbey church of St. Peter's at Exeter became Leofric's cathedral and he was enthroned as Bishop of Exeter there on St Peter's Day in 1050 with King Edward in attendance. The king and his wife Edith took part in the ceremony of enthronement, with both of them leading the bishop to his cathedra, or episcopal chair. Edith had dower rights to the town of Exeter, which may explain her presence at the ceremony.