Kuaiji (Chinese: 會稽/会稽, romanized K'uai-chi in Wade–Giles), also spelled Guiji, is an old name of Shaoxing.

It may also refer to:

• Mount Xianglu near Shaoxing, formerly known as Mount Kuaiji
• Kuaiji Mountains, south of Shaoxing
• Kuaiji Commandery, a historical commandery around the mountain
  • Suzhou, the initial capital of the commandery
• Kuaiji County, a former county around Shaoxing

This disambiguation page lists articles about distinct geographical locations with the same name.
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