Aadahl or Ådahl is a surname. Notable people with the surname include:

• Bo Ådahl (1932–2000), Finnish diplomat
• Erik Aadahl (born 1976), American sound editor
• Simon and Frank Ådahl, members of the Swedish musical group Edin-Ådahl
• Thorvald Aadahl (1882–1962), Norwegian newspaper editor, writer and playwright

• Nances Creek, Al
• Nances Creek, Alabama
• Nance (surname)
• Nance the Piper
• Nancey Jackson Johnson
• Nance–Horan syndrome
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