Basildon is a town in Essex, England.

Basildon may also refer to:

• In Essex:
  • Basildon (district), a local government district
  • Basildon (UK Parliament constituency)
• In Berkshire:
  • Basildon, Berkshire, a parish
  • Lower Basildon
  • Upper Basildon
  • Basildon Park, a country house in Lower Basildon

• Angela Smith, Baroness Smith of Basildon
• Basildon Peta, Zimbabwean journalist and publisher
• Nigel Bond, a snooker player nicknamed "Basildon"

• SS Basildon, a coaster

• Basildon Bond, a stationery brand
• Basildon railway station