Doncanus Hibernus, alias Joannes Duncanus ex Hibernia, was an Irish poet of the Renaissance period who was active 1536–39.
In the words of Jason Harris: "The discovery of examples of humanist Latinity from the pens of Irish writers in the first half of the sixteenth century is a matter of no little consequence, for it provides a counterpoise to traditional accounts of the Renaissance in Ireland, which ultimately derive, for the most part unwittingly, from Tudor propaganda that presented the island as an isolated cultural backwater in need of foreign civility.
Nationalist counter-narratives which depict Ireland as possessed of a pure Gaelic culture uncontaminated by outside influences ironically replicate the structure of this model.
A letter dated 25 March 1537 addressed to Johannes Aepinus in Hamburg, Philip Melanchthon wrote: "There is here [in Wittenberg] one Duncanus the Irishman, who is, I gather, known to you, and whose character, disposition and studiousness I greatly approve.
Melachton wrote a letter concerning Doncanus to Johannes Garcaeus the Elder the same day, stating of him that "he has a very honourable disposition, and he has attained great distinction in Latin and Greek, to which he has added the study of Christian teachings, so that he may at some time be able to be of value to the church of Christ."