Dadu may refer to:

• Dadu or Khanbaliq, capital of the Yuan dynasty; in modern Beijing
• Dadu, Sirsa, a village in Haryana, India
• Dadu District, Sindh, Pakistan
  • Dadu, Pakistan, a town in Dadu District
  • Dadu railway station (Pakistan)
  • Dadu Taluka
• Dadu, Taichung, Taiwan
  • Dadu Plateau
  • Dadu railway station (Taichung)
  • Kingdom of Middag, also known as the Kingdom of Dadu

• Dadu River, a tributary of the Yangtze, in Sichuan province, China
• Dadu River (Taiwan), also known as the "Wu River"

• Dadu Dayal (1544–1603), Indian devotional poet-guru
• Dadu Mahendranath Singh (fl. 1951–1957), Indian politician
• Sergiu Dadu (born 1981), Moldovan footballer

• Dadu cricket team, based in Dadu, Pakistan
• Amarjeet Kapoor "Dadu", fictional character in the 2016 Indian film Kapoor & Sons, played by Rishi Kapoor