// Workers AI · dad joke modeWhat did I6 say to I8? You're 2 much.

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)

See also

• 6I (disambiguation)