U30 may refer to:
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- German submarine U-30, various vessels
- HMS Mermaid (U30), a sloop of the Royal Navy
- SM U-30 (Austria-Hungary), a submarine of the Austro-Hungarian Navy
Other uses edit
- Nissan Presage (U30), a Japanese minivan
- Small ditrigonal icosidodecahedron
- Small nucleolar RNA SNORD30
- Temple Bar Airport, in Mohave County, Arizona, United States
- U-30 Tow Tractor, an aircraft ground handling vehicle