Jean Le Fustec (10 May 1855, in Rostrenen – 22 March 1910, in Paris) was a Breton bard, and the first Archdruid of the Goursez Vreizh (Gorsedd of Brittany).
He is also known by his Breton language name Yann ab Gwilherm and his Druidic name Lemenik.
His father Guillaume Le Fustec was a Huissier de justice (bailiff).
In 1906 Le Fustec and Erwan Berthou published Eur to gir of rear Varzed, Triades des druides de Bretagne,[1] a translation into Breton of the 46 theological Triads of the neo-Bards, according to a text first published by Iolo Morganwg with his own Lyric Poems, then in the Barddas of J. William ab Ithel (1862).
The collection, in fact a forgery by Morganwg, was claimed to have been a translation of works by Llywelyn Siôn detailing the history of the Welsh bardic system from its ancient origins to the present day.