Svein Nyhus (born 23 January 1962) is a Norwegian illustrator and writer of children's books. Svein Nyhus was born in Tønsberg as the twin brother of caricaturist Egil Nyhus. He took his education at the Norwegian National Academy of Craft and Art Industry from 1981 to 1985. Svein Nyhus has illustrated his own texts as well as books by his wife, Norwegian poet Gro Dahle. His own books include His books have been translated into several languages; In 2004 he illustrated Why Kings and Queens Don't Wear Crowns, a picture book written by Princess Märtha Louise of Norway. In 2013 Svein Nyhus illustrated What Does the Fox Say?, a children's picture book based on Ylvis's YouTube hit The Fox. The book debuted before Christmas at number one on the New York Times Best Seller list. Nyhus also illustrated Sina Mann (Angryman, 2004), a picture book about a boy witnessing domestic violence, written by his wife Gro Dahle. It was published in English 2019.