R43 may refer to:
Roads
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R43 expressway (Czech Republic)
D43 motorway ( cs, Dálnice D43), formerly Expressway R43 ( cs, Rychlostní silnice R43) is a highway in the Czech Republic. If completed, it will connect cities Brno and Moravská Třebová, and the Highway D1 (Czech Republic), D1 highway with ...
, now the D43 motorway
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R43 (South Africa)
Other uses
* , a destroyer of the Royal Navy
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R43: May cause sensitisation by skin contact, a risk phrase
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Small nucleolar RNA R43
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