Guandong or Kwantung may refer to:

• Guandong (關東), a historical name for Manchuria, literally translating to "east of (Shanhai) Pass"
  • The Guandong Peninsula, meaning the Liaodong Peninsula, a peninsula extending from southern Guandong
  • Kwantung Leased Territory, part of the Guandong Peninsula controlled by Russia and later Japan from 1898 to 1945
• Guandong (關東), a historical name for North China Plain, literally translating to "east of (Tong) Pass"

• Guandong, Guangxi (官垌), a town in Pubei County, Guangxi, China
• Guandong, Guizhou (贯洞), a town in Congjiang County, Guizhou, China

• Guangdong, a coastal province in South China