I11 or I-11 may refer to:
- AISA I-11, a two-seat civil utility aircraft
- Interstate 11, a highway in the United States
- Japanese submarine I-11, a Type A1 submarine of the Japanese Imperial Navy
- Kronoberg Regiment, a Swedish Army infantry regiment designated as I 11 and I 11/Fo 16
- NMBS/SNCB I11 coach, a type of Belgian passenger rail vehicle
- VEF I-11, a Latvian light aircraft
This disambiguation page lists articles associated with the same title formed as a letter–number combination.
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