R19 may refer to:
* , a destroyer of the Royal Navy
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R19: May form explosive peroxides, a risk phrase
*
R-19 regional road (Montenegro)
R-19 regional road ( cnr, Regionalni put R-19) (previously part of M-9 highway) is a Montenegrin roadway.
This road will be a parallel road to section of Bar–Boljare motorway from Mateševo to Andrijevica. As of 2017, no work has been done o ...
*
Renault 19, a French automobile
*
Samsung Sens R19, a laptop
* , a submarine of the United States Navy
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