X-Corp, short for X-Corporation, is an institution owned by Prof. Charles Xavier, founder of the X-Men. Its purpose is to provide support for "civilian" mutant populations on a global scale. X-Corp offices are located in many major cities in every continent, and each office is managed by a former member of the X-Men or one of their satellite teams, such as Banshee or Domino.

In the Marvel Trading Card Game , X-Corp is the evil scientific corporation that is controlled by the Green Goblin's son, Hobgoblin, from the Spider-Man series.