Oak Ridge or Oakridge may refer to numerous locations in English-speaking countries - the most well-known being Oak Ridge, Tennessee, due to its part in the Manhattan Project. These and other meanings include:

• Oakridge, Calgary, neighbourhood in Alberta
• Oakridge, Toronto, a neighbourhood in Ontario
• Oakridge, Vancouver, a neighbourhood in British Columbia
• Oakridge Acres, a neighbourhood in London, Ontario

• Oakridge, Stroud, Gloucestershire, England
• Oakridge, Tewkesbury, Gloucestershire, England

• Oakridge, Hampshire, England

• Oak Ridge (California), in Santa Clara County
• Oak Ridge, Florida, in Orange County
• Oak Ridge, Louisiana, in Morehouse Parish
• Oak Ridge, Michigan, an unincorporated community
• Oakridge, Minnesota, in Winona County
• Oak Ridge, Missouri, in Cape Girardeau County
• Oak Ridge, Pemiscot County, Missouri
• Oak Ridge, New York, a hamlet south of the village of Charleston, New York
• Oak Ridge, New Jersey, in Passaic and Morris Counties
• Oak Ridge, North Carolina, a town in Guilford County
• Oak Ridge, Stokes County, North Carolina
• Oakridge, Oregon, in Lane County
• Oak Ridge, Pennsylvania (disambiguation)
• Oak Ridge, Tennessee, in Anderson and Roane counties
• Oakridge, Montgomery County, Tennessee, in Montgomery County
• Oak Ridge, Cooke County, Texas
• Oak Ridge, Kaufman County, Texas
• Oak Ridge North, Texas, in Montgomery County
• Oak Ridge, Virginia (disambiguation)
• Oak Ridge, West Virginia, in Fayette County
• Oakridge, Wisconsin, in the town of Isabelle, Pierce County

• Oak Ridge (California), a ridge in Santa Clara County
• Oakridge station, a light rail station in San Jose, California
• Oak Ridge, Adams County, Pennsylvania, part of the Gettysburg Battlefield
• Oak Ridge Historic District, a historic district in Oak Ridge, Tennessee
• Oak Ridge (Danville, Virginia), a historic plantation estate in Pittsylvania County
• Oakridge (Blackstone, Virginia), an historic home in Nottoway County

• Oak Ridge Cemetery in Springfield, Illinois, U.S.
• Oakridge Cemetery, a cemetery located in Hillside, Illinois, U.S.

• Oak Ridge Associated Universities, a consortium of American universities headquartered in Oak Ridge, Tennessee, U.S.
• Oak Ridge High School (disambiguation)
• Oak Ridge Institute for Science and Education, a Department of Energy institute, headquartered in Oak Ridge, Tennessee, U.S.
• Oak Ridge Military Academy, a military college-preparatory school in North Carolina, U.S.
• Oakridge School (disambiguation)
• Oakridge Secondary School, a secondary school in London, Ontario, Canada

• K-25, a former uranium enrichment facility of the Manhattan Project in Oak Ridge, Tennessee, U.S.
• Oak Ridge National Laboratory, a science and technology national laboratory in Oak Ridge, Tennessee, U.S.
  • ORACLE (computer), an early computer built at the laboratory
• Oak Ridge Observatory, an astronomical observatory at Harvard University

• USS Oak Ridge (ARDM-1), a World War II U.S. naval vessel used as a floating dry dock
• The Oak Ridge Boys, a U.S. country music band
• Oak Ridge Waste, a waste management company located in the United States.

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