Hang Seng may refer to:

• Hang Seng Bank, a bank in Hong Kong
• Stock market indices by Hang Seng Bank for companies listed on the Stock Exchange of Hong Kong:
  • Hang Seng Index, the major index reflecting stock market performance in Hong Kong
  • Hang Seng China Enterprises Index
  • Hang Seng China-Affiliated Corporations Index
  • Hang Seng Composite Index Series
  • Hang Seng Freefloat Index Series
• Stock market indices by Hang Seng Bank
  • Hang Seng China 50 Index
• Hang Seng School of Commerce, a school in Hong Kong

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