Y11 may refer to:
- Y11 series, a car series of the Nissan Wingroad
- Gokokuji Station station number
- Harbin Y-11, a high wing twin-engine piston utility aircraft
- LNER Class Y11, a class of petrol powered 0-4-0 locomotives built by Motor Rail & Tram Car Company Limited
- Year Eleven, an educational year group in schools in many countries including England, Wales, Northern Ireland, Australia and New Zealand
- French Republican Calendar/Y11
This disambiguation page lists articles associated with the same title formed as a letter–number combination.
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