I11 or I-11 may refer to:
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AISA I-11, a two-seat civil utility aircraft
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Interstate 11
Interstate 11 (I-11) is an Interstate Highway that currently runs for on a predominantly northwest–southeast alignment in the U.S. state of Nevada, running concurrently with either or both U.S. Route 93 (US 93) and US 9 ...
, a highway in the United States
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Japanese submarine ''I-11'', a Type A1 submarine of the Japanese Imperial Navy
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Kronoberg Regiment, a Swedish Army infantry regiment designated as I 11 and I 11/Fo 16
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NMBS/SNCB I11 coach, a type of Belgian passenger rail vehicle
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VEF I-11, a Latvian light aircraft
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