Limestone is a sedimentary rock composed predominantly of calcium carbonate (calcite and/or aragonite).

Limestone may also refer to:

• Limestone, Queensland, a locality in Rockhampton region
• Limestone, Victoria, a locality in rural Victoria
• Limestone Station, a pastoral lease in New South Wales

• Limestone, New Brunswick (disambiguation)
• Little Limestone Lake, Manitoba

• Northern Limestone Alps
• Southern Limestone Alps

• Limestone, Illinois
• Limestone, Kentucky, former name for the city of Maysville
• Limestone, Maine, a town
  • Limestone (CDP), Maine, a census-designated place in the town of Limestone
• Limestone, Michigan
• Limestone, New York
• Limestone, Oklahoma
• Limestone, Tennessee
• Limestone, West Virginia
• Limestone Creek, Florida
• Limestone Mountain, a summit in West Virginia

• Limestone (album), an album by Joe Camilleri and Nicky Bomba
• Limestone University, South Carolina, United States of America

• Limestone Coast (disambiguation)
• Limestone County (disambiguation)
• Limestone Run (disambiguation)
• Limestone Township (disambiguation)