X-23 is a superheroine appearing in American comic books published by Marvel Comics.
X23 may also refer to:
X23 (New York City bus) "X23" (X-Men: Evolution), an episode of the television series X-Men: Evolution Martin X-23 PRIME, an American experimental lifting body Kh-23 (), a Soviet anti-ship missile TGOJ X23, a Swedish electric multiple unit ThinkPad X23, a notebook computer Umatilla Municipal Airport, Florida