Femizon is the name of two fictional groups appearing in American comic books published by Marvel Comics.
The first group to be called Femizons consist of the women of Femizonia, a gynarchic future world in an alternate timeline where women had become Amazon-like warriors, ruling over male slaves. Thundra, a recurring enemy and ally of the Fantastic Four, originates from Earth-712.
The second group to be called Femizons is a group of all-female supervillains on Earth-616. They were enemies mainly for Captain America, and their goal was to conquer Earth and create a utopia where women ruled. Led by Superia, who claimed to be inspired by stories of Thundra's Femizons, the group consisted of a large number of established female criminals and super villainesses. Superia gained Blackbird, Iron Maiden, MODAM, Moonstone, and Nightshade as her lieutenants.