1Y
1Y or 1-Y may refer to:
- UH-1Y; see H-1 upgrade program
- SSH 1Y (WA); see Washington State Route 532
- 1Y-J, a model of Toyota Y engine
- 1Y, IATA code for Sun Air (Sudan)
- 1Y, IATA code for Electronic Data Systems
- 1-Y classification in the U.S. Selective Service System, no longer in use
See also[edit]
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