U-43 class submarine may refer to:
- U-43-class submarine (Austria-Hungary), a class of two former German Type UB II coastal submarines sold to the Austro-Hungarian Navy during World War I
- U-43-class submarine (Germany), a class of eight ocean-going submarines built at the Imperial Dockyard at Danzig during World War I
This disambiguation page lists articles associated with the title U-43-class submarine.
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