R42 or R-42 may refer to:
Roads edit
Other uses edit
- R42 (New York City Subway car)
- HMS Undine (R42), a destroyer of the Royal Navy
- Junkers R 42, a transport aircraft
- R42: May cause sensitisation by inhalation, a risk phrase
- Sidolówka, a Polish hand grenade
- Spectre R42, a British sports car
This disambiguation page lists articles associated with the same title formed as a letter–number combination.
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