Thetford is a market town in the English county of Norfolk.

Thetford may also refer to:

• Thetford Mines, Quebec, Canada

• Thetford, Lincolnshire, England
• Thetford, Cambridgeshire, civil parish in Cambridgeshire, England
  • Little Thetford, a village in the parish
• Thetford (UK Parliament constituency), Norfolk

• Thetford, Vermont, United States
• Thetford Township, Michigan, United States

• Thedford (disambiguation)