Shinobi Shaw is a fictional character in the Marvel Comics Marvel Universe. He is a comic book supervillain, a foe of the X-Men and their affiliated teams. Some of Shinobi Shaw's body is prosthetic as a result of injuries suffered battling Wolverine.

Shinobi is thought to be the son of Sebastian Shaw, the leader of the Hellfire Club. Shinobi himself has been somewhat uncertain about this: his powers are more like the former Black Bishop of the Club, Harry Leland .

Shinobi is a mutant who can can alter his body's density from diamond-hard to intangible. He usually uses it as a means of escape, but he can also use the intangibility to reach into an opponent's heart and induce a heart attack (obviously, this adversely affects the person who he is "phasing" into, but has no adverse affects on Shaw himself).

Shinobi once attempted to kill his father, and was allowed to believe himself successful; although his father lived, Shinobi was able to take control of the Hellfire Club briefly. Now that his father has returned to power, Shinobi's whereabouts are undetermined.