Sir John Port (before 1510 – 6 June 1557) was an English landowner and Knight of the Order of the Bath who served occasionally in the House of Commons.

He was knighted at the coronation of King Edward VI in 1547 and was a member of Queen Mary's first parliament, representing Derbyshire in 1553.

By his will he left bequests for the creation of an almshouse at Etwall and a "Grammar School in Etwalle or Reptone", where the scholars every day were to pray for the souls of his parents and other relatives.

"[6] Thus only a few fragments and foundations of the original priory church remain, although other buildings survived and are now part of Repton School.

[2] Port married firstly Elizabeth Giffard, a daughter of Sir Thomas Giffard of Chillington in Staffordshire by Dorothy, his wife, third daughter and co-heiress of Sir John Montgomery, which Elizabeth was heiress to her mother.