Barth may refer to:

• Barth, Germany, a town in Mecklenburg-Western Pomerania, Germany
  • Barth (Amt), administrative subdivision
• Barth Island, Nunavut, Canada

• Barth (name), a surname (and list of people with that name)
• Barth Bagge, a character from the television show "You Can't Do That on Television"
• Barth Classic, a golf tournament on the LPGA Tour from 1974 to 1980

• Barth syndrome, a metabolic disorder
• Barthes (disambiguation)
• Barthe (disambiguation)