Hitoshi Iwaaki (Japanese: 岩明 均, Hepburn: Iwaaki Hitoshi, born July 28, 1960) is a Japanese manga artist, whose works include the science-fiction/horror series Parasyte.

He began working as an assistant for manga artist Kazuo Kamimura in 1984.

In 1985, his short story "Gomi no Umi" won the newcomer award Tetsuya Chiba Award and was published in a special edition of Morning magazine.

[2] In 2010, Historie took the grand prize in the manga division of the Japan Media Arts Festival.

[4] Iwaaki won the 2020 Saito Takao Award for his work on Reiri.