Unknown Worlds is an alternate title for Unknown, a 1940s pulp magazine.

Unknown Worlds may also refer to:

• Unknown Worlds of Science Fiction , a 1970s comics magazine
• Unknown Worlds: Tales from Beyond , a 1989 short story collection
• Unknown Worlds Entertainment, a video game developer

This disambiguation page lists articles associated with the title Unknown Worlds.
If an internal link led you here, you may wish to change the link to point directly to the intended article.