Evil-Lyn is a supervillainess in the Masters of the Universe toy line and the accompanying cartoon series He-Man and the Masters of the Universe.

An evil witch who aids Skeletor as his second-in-command with her powers of darkness. She is vastly more intelligent than Skeletor's other minions, and while she admits that she is not as powerful as Skeletor, she readily confesses that she hopes to seize her master's powers and rule over Eternia herself one day. Thus, she has worked completely independently of Skeletor on multiple occasions. Her trademark is the magic wand crowned with a crystal orb, but Evil-Lyn typically generates magic without the assistance of any instruments.