Keystone or key-stone may refer to: Keystone (architecture), a central stone or other piece at the apex of an arch or vault Keystone (cask), a fitting used in ale casks
Companies Keystone Law, a full-service law firm Digital Keystone, a developer of digital entertainment software Keystone Aircraft Corporation Keystone Bridge Company, an American bridge building company Keystone (beer brand) Keystone Camera Company Keystone (gasoline automobile) Keystone (steam automobile) Keystone Pipeline, a crude oil pipeline Keystone-SDA/Keystone-ATS, a Swiss press agency Keystone View Company, a US photo agency Keystone (Berkeley, California), a defunct music club
Education Keystone Academy, a private K–12 school in Shunyi, Beijing, China Keystone College, a private college in Pennsylvania, United States Keystone Exam, a standardized test at public schools in Pennsylvania, United States Keystone School, a private K–12 school in San Antonio, Texas, United States Keystone School Online, a private for-profit online K–12 school based in Herndon, Virginia, United States Keystone, an education program at the U.S. National Defense University
Entertainment Keystone (video game), part of the Xbox Live Arcade title Fable 2 Pub Games Keystone (band), led by jazz trumpeter Dave Douglas Keystone (album), a 2005 album by the band Keystone Cops, a silent movie series Keystone Kapers, a classic Atari game Keystone Studios, a movie studio
Places The Keystone asterism in the Hercules constellation
United States The "Keystone State", nickname for the U.S. Commonwealth of Pennsylvania Keystone, Colorado, a town Keystone Resort, the related ski resort Keystone, Florida, an unincorporated community Keystone, Indiana Keystone, Iowa Keystone, Missouri Keystone, Nebraska Keystone, North Dakota Keystone, Ohio Keystone, South Dakota, a town near Mount Rushmore Keystone, Washington, an unincorporated community Keystone, West Virginia Keystone, Wyoming Keystone at the Crossing, a business/shopping district in Indianapolis, Indiana The Fashion Mall at Keystone, located in the Keystone shopping district Keystone Heights, Florida Keystone Canyon, Alaska Keystone Lake, a resort area near Tulsa, Oklahoma Keystone, Wisconsin
Canada The "Keystone Province", a nickname for the Province of Manitoba Keystone Centre, an arena and exhibition centre in Brandon, Manitoba
Fictional locations Keystone City, home of the comic book character The Flash Keystone City, a holographic city in the Star Trek: The Next Generation episode "Emergence"
Railroads Keystone Corridor, a rail corridor from Philadelphia to Pittsburgh Keystone Service, a current New York-Harrisburg service Keystone (Amtrak train, 1979–1981), a predecessor of the current service Keystone (Amtrak train, 1971–1972), a former New York-Pittsburgh service operated by Amtrak Keystone, a former New York-Washington service operated by the Pennsylvania Railroad Keystone (train), a lightweight train used for the service
Sports Keystone Junior Hockey League, in Manitoba Keystone Cup, Western Canadian Junior "B" ice hockey championship Keystone (horse), a racehorse
Other uses Keystone (limestone), quarried in the Florida Keys Keystone effect, caused by projecting an image onto a surface at an angle, or by photography at an angle Keystone Initiative, a medical protocol to reduce infection rates Keystone module, a type of data connector mounted in walls and patch panels Keystone Press Awards Keystone species, species that have a larger effect on their environment than is purely due to their abundance Operation Keystone, during World War II Keystone, a variety of screwdriver blade "Keystone", a descriptive reference to the Book of Mormon The Keystone, journal of the Pennsylvania Railroad Technical and Historical Society The Keystone, Pennsylvania news website owned by Courier Newsroom
See also
Stone (disambiguation) Key (disambiguation) The Stone Key (2008 novel) post-apocalyptic novel by Isobelle Carmody Stone Key Partners (bank) U.S. boutique investment bank