I6 or I-6 may refer to:
- Japanese submarine I-6, an Imperial Japanese Navy submarine launched in 1935 and sunk in 1944
- Polikarpov I-6, a Soviet fighter prototype of the 1930s
- Straight-six engine, six-cylinder internal combustion engine
- Ravenloft (module), or "I6: Ravenloft," a 1983 adventure module for Dungeons & Dragons
- Roewe i6, a Chinese saloon
I 6 is a Swedish regimental designation (6th Infantry Regiment) that has been used by the following units:
- Västgöta Regiment (1816–1927)
- North Scanian Infantry Regiment (1928–1963)
This disambiguation page lists articles associated with the same title formed as a letter–number combination.
If an internal link led you here, you may wish to change the link to point directly to the intended article.
If an internal link led you here, you may wish to change the link to point directly to the intended article.