Masato Hisa is a Japanese manga artist and writer, born in 1976 or on December 24, 1977. He began drawing manga while a member of the manga research club at Keio University, and after winning several rookie awards from Kodansha's Monthly Afternoon magazine, he launched his first serialized work, Grateful Dead, in the publisher's Monthly Magazine Z in 2003. He followed this with Jabberwocky, also in Magazine Z, before beginning serialization of Area 51 in Shinchosha's Comic@Bunch and Nobunagun in Earth Star Entertainment's Comic Earth Star in 2011.

Hisa is best known as the original creator of Nobunagun, which he wrote and illustrated. The series follows high school girl Sio Ogura, who awakens as a reincarnation of the historical figure Oda Nobunaga and wields his power to fight alien invaders. Nobunagun was serialized from May 2011 to August 2015 and collected into six tankōbon volumes. In January 2014, the manga was adapted into an anime television series by studio Bridge, which aired for one season. His other notable manga works include Area 51, which is set in a secret society of supernatural creatures and mythological figures; Kamuya Ride, about a hero standing between the human and god worlds; and a short story collection titled Four Billion Nights.

His artistic identity is defined by a high-contrast, black-and-white drawing style reminiscent of American comics, particularly influenced by Frank Miller's Sin City. His narratives are notable for their rapid, film-like dialogue and for blending historical figures, mythology, science, and paleontology. This thematic approach was influenced by Kim Newman's novel Anno Dracula. His interest in dinosaurs is a recurring element in his work, as seen in Jabberwocky, a story set in a world where dinosaurs never went extinct. This passion is hereditary; Hisa is the son of Kunihiko Hisa, a well-known dinosaur researcher and illustrator.

Beyond his original manga, Hisa has contributed to the Japanese entertainment industry as a designer for live-action superhero productions. He created concept art for monsters and spaceships in the Super Sentai series Uchu Sentai Kyuranger, Kaitou Sentai Lupinranger VS Keisatsu Sentai Patranger, and Kishiryu Sentai Ryusoulger, as well as designing the Deadmen creatures for Kamen Rider Revice. As of 2024, he remains active, providing the original story for the manga Ryū to Rei (Dragon & Ape), which launched in Kodansha's Morning magazine in August of that year, with art by Naoki Azuma.