Hugh Fenn (about 1418-1476), also written Fenne or atte Fenn, was an English official from Norfolk who rose to a high position in the Exchequer during the reigns of King Henry VI and Edward IV.
Born about 1418, the son of Thomas Fenn, a leading citizen of Great Yarmouth, and grandson of the MP Hugh Fenn, he may have had some education at Cambridge University and at Gray's Inn. By 1444 he was an official in the Exchequer and in 1450 as clerk to John Somer, an Auditor, had to report to Parliament on the state of the nation's finances.
As a royal official, he took charge of properties falling into Crown hands. For example, in 1450 he was keeper of lands at Wratting forfeited by William de la Pole, 1st Duke of Suffolk and in 1451 of lands at Swaffham. On John Somer's death in 1453, Fenn was appointed to succeed him as Auditor by John Tiptoft, 1st Earl of Worcester, the Lord High Treasurer of England. At the age of about 35, he became one of the most senior officials in the department and was well placed, over and above his official business, to help friends, neighbours and relations in their legal and financial affairs.
Two influential Norfolk connections of his were the Paston family and Sir John Fastolf, a possible relation for whom he stood guarantor in 1452. His name occurs frequently in the Paston Letters as using his knowledge and contacts to advance that family's interests, with Margaret Paston noting that: he is called right feythfull and trosty to his frendes that trost hym. Another service was to be executor of a will, acting for instance for Sir Geoffrey Boleyn in 1463 and for the sheriff of Essex, Sir John Clay, in 1464.