Yoshihisa Tagami is a Japanese manga artist born on December 9, 1958, in Komoro, Nagano. He began his career in the late 1970s, receiving an Honorable Mention in the Shogakukan Manga Award's Newcomer category in 1978 for his work Zashikiwarashi, which became his first published manga in a 1979 issue of Big Comic magazine. He is the older brother of fellow manga artist Iku Oyamada.

Tagami’s early professional work includes the manga Karuizawa Syndrome, which was serialized in Big Comic Spirits from 1980 to 1985. This series, a seinen story about a young man who moves from Tokyo to a resort town, was later adapted into an anime film in 1986. His other notable early work is My Name is Wolf, serialized in 1983.

Tagami is perhaps best known internationally for his science fiction manga Grey, which was originally serialized in Monthly Shōnen Captain from 1985 to 1986. Set in a post-apocalyptic dystopia, Grey was translated into English by Viz Media in the late 1980s, making it one of his most widely recognized works abroad. It was also adapted into an anime film, Grey: Digital Target, in 1986. Following Grey, he created the occult horror series Horobi, serialized in Shōnen Captain from 1987 to 1990, which was also published in English by Viz Media. His manga Frontier Line, a mecha science fiction series, was serialized from 1987 to 1988 and later published in English by Central Park Media.

In addition to his manga, Tagami contributed to the anime industry as a character designer for the television series Chō Kōsoku Galvion, which aired in 1984. His later manga works include the martial arts story Fighter, the mecha series Metal Hunters D, the Western Pepper, and contributions to the Black Jack tribute anthology Black Jack Alive.