8400

8400 or variation, may refer to:

• A.D. 8400, a year in the 9th millennium CE
• 8400 BCE, a year in the 9th millennium BC
• 8400, a number in the 8000 (number) range

• 8400 Tomizo, an asteroid in the Asteroid Belt, the 8400th asteroid registered
• Texas Instruments 8400 series ICs, a variant of the 7400-series integrated circuits
• Kintetsu 8400 series electric multiple unit train series

• All pages with titles beginning with 8400
• All pages with titles containing 8400
• E8400 (disambiguation)