7400 may refer to:
Years
- A.D. 7400, a year in the 8th millennium CE
- 7400 BCE, a year in the 8th millennium BC
Electronics and computing
- Texas Instruments 7400-series integrated circuits
- PowerPC 7400 CPU chip
- MITS 7400 scientific and engineering calculator
Other uses
- 7400 Lenau, an asteroid in the Asteroid Belt, the 7400th asteroid registered
- 7400 (District of Kolonjë), one of the postal codes in Albania
- GWR 7400 Class locomotives
See also
- List of 7400-series integrated circuits
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