The Rhino (Aleksei Sytsevich; English: Ah-lek-say sit-seh-vich; Russian: Алексей Сицевич) is a fictional character appearing in American comic books published by Marvel Comics. He was created by writer Stan Lee and artist John Romita Sr., and first appeared in The Amazing Spider-Man #41 (Oct. 1966).[1] The character is a Russian thug who underwent an experimental procedure that gave him an artificial skin covering and superhuman strength. Rebelling against the scientists responsible for his transformation, Rhino used his newfound powers to become a successful criminal, and soon clashed with superheroes like Spider-Man and the Hulk. The character is typically portrayed as a dimwitted brute, capable of great destruction, but ultimately easily deceived.

One of Spider-Man's most prominent adversaries, the Rhino has been adapted into various forms of media since his original debut during the Silver Age of Comic Books, including animated television series and video games. He has also featured in Marvel merchandise such as action figures and trading cards.

Paul Giamatti played a version of Aleksei Sytsevich who uses a rhinoceros-themed battle armor, similar to the character's Ultimate Marvel incarnation, in the 2014 film The Amazing Spider-Man 2.