Yūji Iwahara(岩原 裕二Iwahara Yūji, born in Memanbetsu, Hokkaido, Japan) is a Japanese manga artist. After graduating from art school he joined Hudson Soft as a graphic artist. He made his manga debut in 1994 in Afternoon with a story for which he won the fall Afternoon Four Seasons Award, a prize he received three more times over the next two years. He is best known in the West for his work on King of Thorn and Chikyu Misaki, both of which have been licensed in English. He also drew the art for Quest, a short-lived title in the Marvel Comics imprint Tsunami.