I7, i7, or I-7 may refer to:
- Intel Core i7, a brand of Intel processors
- BMW i7, an electric luxury sedan
- Inline-seven engine or straight-seven engine
- Interstate 7, a proposed Interstate highway in California
- I7, in music tonic, the secondary supertonic chord of IV
- i7, the former web portal for Seven Network, replaced by Yahoo7
- Japanese submarine I-7, an Imperial Japanese Navy submarine launched in 1935 and wrecked in 1943
- Paramount Airways' IATA code