Yin may refer to:

• Yin Dynasty, also known as Shang Dynasty, the first historic Chinese nation and dynasty
  • Yin (city), the last capital of that Dynasty
• Yin (surname), a rare Chinese surname
• Yin Chengzong, premier Chinese pianist and composer who arranged the Yellow River Concerto
• Yin (yin and yang), one of two opposing forces in traditional Chinese philosophy and medicine
• Yin (book), by Carolyn Kizer

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