U21 or U-21 may refer to:
- Beechcraft U-21 Ute, an aircraft used by the United States military
- German submarine U-21, one of several German submarines
This disambiguation page lists articles associated with the same title. If an internal link led you here, you may wish to change the link to point directly to the intended article
|This page uses Creative Commons Licensed content from Wikipedia (view authors).|
Community content is available under CC-BY-SA unless otherwise noted.