John Marshall (or Martiall) (born in Worcestershire, 1534, died at Lille, 3 April 1597) was an English Roman Catholic priest.
He next accepted a post as assistant master at his old school at Winchester under Thomas Hyde; but soon after the accession of Elizabeth I of England, both of them found it necessary to quit the country.
Marshall retired to Leuven, where a number of English Catholic exiles were residing.
He did not, however, remain long, chiefly because of the smallness of the allowance which it was possible to give; later on, he obtained a canonry in the church of St. Peter at the neighbouring city of Lille.
He died on 3 April 1597 at Lille, in the arms of his friend William Gifford, and was buried in St. Peter's Church.