U12

U12 may refer to:

Submarines

• German submarine U-12, various vessels
• SM U-12 (Austria-Hungary), a submarine of the Austro-Hungarian Navy

Other uses

• U12 (Berlin U-Bahn), a former railway line
• "U12" (song), a 2015 song by Daya
• Nissan Bluebird (U12), a Japanese sedan
• Nissan Pintara (U12), a Japanese sedan
• Snub cube
• U12 Consortium, a university alliance in Taiwan
• U12 minor spliceosomal RNA
• Udet U 12 Flamingo, a German biplane
• BMW X1 (U12), a German crossover exclusively sold in China
• Under-12, an age classification in many youth sports