U 43

U 43 denotes:

• an underground line in Dortmund, see Stadtbahn Dortmund
• SM U 43 , a submarine of the Imperial Navy during the First World War
• SM U 43 , a submarine of the Austro-Hungarian Navy, see SM Unterseeboote #SM U 27, U 28, U 29, U 30, U 31, U 32, U 40, U 41, U 43, U 47
• U 43 (Kriegsmarine) , a submarine of the German Wehrmacht in World War II

This is a disambiguation page for differentiating between several terms identified with the same word.