Born in Reykjavik in 1962, Sjon is an Icelandic writer whose novels The Blue Fox, The Whispering Muse, From the Mouth of the Whale, Moonstone and CoDex 1962 have been translated into thirty-five languages.

He has won several awards including the Nordic Council's Literature Prize for The Blue Fox and has also been shortlisted for the International IMPAC Dublin Literary Award and the Independent Foreign Fiction Prize, while Moonstone won the Icelandic Literary Prize and the Icelandic Booksellers' prize for Novel of the Year.

Sjon has also published nine poetry collections, written four opera librettos as well as lyrics for various artists, and was nominated for an Oscar for his lyrics in the film Dancer in the Dark.

In 2017, Sjon became the third writer - following Margaret Atwood and David Mitchell - to contribute to Future Library, a public artwork based in Norway spanning 100 years. He lives in Reykjavik, Iceland.