R64 may refer to:
- R64 (South Africa), a road
- HMCS Sioux (R64), a destroyer of the Royal Canadian Navy
- HMS Theseus (R64), an aircraft carrier of the Royal Navy
- R64: May cause harm to breast-fed babies, a risk phrase in chemistry
- Small nucleolar RNA R64/Z200 family
This disambiguation page lists articles associated with the same title formed as a letter–number combination.
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