Itsuki Matsumoto is a Japanese novelist and original creator known for work in the light novel and anime industries. Born in 1984, Matsumoto grew up in Kyoto and is a graduate of Waseda University. The name is represented with the kanji 松本逸暉.

Matsumoto is credited as the original author of the light novel "Trisisters" (also known as "Three Students"), which was published in 2012. This work served as the basis for the anime adaptation Mitsuwano, a single thirty-minute OVA produced by the studio ZEXCS in 2014, for which Matsumoto received credit as the original creator.