R1A may refer to:
- Haplogroup R1a
- Line R1a, a planning name for Line 5 (Shanghai Metro)
- R1A, a class of Group R
- R1A, a Canadian postal code assigned to Selkirk, Manitoba
- Robonaut 1A, a version of Robonaut 1
See also
This disambiguation page lists articles associated with the same title formed as a letter–number combination.
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