Hiroyuki (????, born April 23, 1982) is a Japanese manga artist from Ishikawa Prefecture, Japan.
He is notable for the creation of the four-panel comic strip manga Dojin Work which is the first of his works to be adapted into an anime television series.
He also created the four-panel manga series The Comic Artist and His Assistants, which was serialized from 2008 to 2012, with a sequel serialized from August 2013, and adapted into an anime television series which aired in 2014.
Hiroyuki has also created dojinshi based on the Type-Moon visual novels Tsukihime and Fate/stay night.
His older sister, Kouji Megumi (? ??, Megumi Koji), is also a manga artist.