Yan Bibiyan () is the first Bulgarian fantasy novel for children by the Bulgarian writer Elin Pelin and the name of its protagonist. The novel is described as " the most celebrated childrenâÂÂs fantasy novel". Today there is almost nobody in Bulgaria who has not read it as a child, and it is part of the recommended literature for the fourth grade curriculum.
The novel consists of two parts: ("Yan Bibiyan. The Amazing Adventures of a Boy", 1933) ø ("Yan Bibiyan on the Moon", 1934).
In the first part Yan Bibiyan befriends a mischievous devilkin Fyut. Later Yan gets trapped in a kingdom of a Great Vizard Mirilaylay (). The genre of this part may be described as a fairy tale or fantasy.
In the second part Yan Bibiyan gets to the Moon, and it is a classical science fiction, where Fyut appears only episodically.
In the preface to the second part the author gave the following summary of the first part:
based on the novel was written. Libretto: Alla Gerova, music: . It premiered in the Ruse National Opera on May 14, 1969.
In 1985 based on the novel was produced.
In 2022 the Bulgarian National Film Center funded a new film to be directed by Javor Gardev based in the novel.