Barnesville may refer to:

In Canada:

• Barnesville, New Brunswick

In the USA:

• Barnesville, Alabama
• Barnesville, Georgia
• Barnesville, Kansas
  • Barnesville's Post
• Barnesville, Maryland
  • Barnesville (MARC station)
• Barnesville, Minnesota
• Barnesville, Clinton County, Missouri
• Barnesville, Macon County, Missouri
• Barnesville, North Carolina
• Barnesville, Ohio
  • Barnesville Baltimore and Ohio Railroad Depot
• Barnesville, Pennsylvania
• Barnesville Township, Clay County, Minnesota

• Magnis
• Magnistipula
• Magnistipula conrauana
• Magnistipula cuneatifolia
• Magnitizdat
• Magnitogorsk Airport
• Magnitogorsk International Airport
• Magnitogorsk Iron and Steel Works
• Magnitogorsk West
• Magnitude 10.5
• Magnitude condition
• Magnitude Kishiwada
• Magnitude of an eclipse
• Magnitude of eclipse
• Magnitudes
• Magnius
• Magni Ásgeirsson
• Magnocellular
• Magnocellular cells
• Magnocellular pathway
• Magnog
• Magno (Golden Age)
• Magnolia amoena
• Magnolia Antonino
• Magnolia, AR μSA