I8 or I-8 may refer to:
*
Interstate 8
Interstate 8 (I-8) is an Interstate Highway in the southwestern United States. It runs from the southern edge of Mission Bay at Sunset Cliffs Boulevard in San Diego, California, almost at the Pacific Ocean, to the junction with I-10, ...
, a highway in the southwestern United States
*
''Interstate 8'' (EP), an extended play by Modest Mouse
* ''
Resistance: Fall of Man'', a video game originally known as ''I-8''
*
Straight-eight engine
The straight-eight engine (also referred to as an inline-eight engine; abbreviated I8 or L8) is a piston engine with eight cylinders arranged in a straight line along the crankshaft. The number of cylinders and perfect primary and secondary engi ...
, an uncommon internal combustion engine
* , a submarine of the Imperial Japanese Navy
*
BMW i8, a plug-in hybrid sports car
*
Uppland Regiment, a Swedish Army infantry regiment disbanded in 1957
*
i8, a name for the
8-bit signed integer, especially in
Rust
{{Letter-Number Combination Disambiguation