U66 may refer to:
- German submarine U-66, various vessels
- Great stellated truncated dodecahedron
- HMS Starling (U66), a sloop of the Royal Navy
- Small nucleolar RNA SNORA66
This disambiguation page lists articles associated with the title U66.
If an internal link led you here, you may wish to change the link to point directly to the intended article.
If an internal link led you here, you may wish to change the link to point directly to the intended article.