Rohonc Codex

The Rohonc Codex (Hungarian pronunciation: [ˈrohont͡s]) is an illustrated manuscript book by an unknown author, with a text in an unknown language and writing system, that surfaced in Hungary in the early 19th century. The book's origin and the meaning of its text and illustrations have been investigated by many scholars and amateurs, with no definitive conclusion, although many Hungarian scholars believe that it is an 18th-century hoax.

The name of the codex is often spelled 'Rohonczi', according to the old Hungarian orthography that was reformed in the first half of the 19th century. This spelling has become widespread, likely due to a book published on the codex by V. Enăchiuc in 2002. Today, the name of the codex is written in Hungarian as 'Rohonci kódex'.