A cornerstone is a ceremonial masonry stone set in a prominent location on the outside of a building.
Cornerstone may also refer to:
Companies and organizations Cornerstone (agency), a New York-based creative agency Cornerstone, an imprint of Random House UK Cornerstone (charity), a Scottish charity providing support and care for people with disabilities Cornerstone OnDemand Inc., an American cloud-based talent management software company Cornerstone Policy Research and its legislative action arm Cornerstone-Action, a U.S. political organization based in the state of New Hampshire Cornerstone Research, an economic and financial consulting firm in the United States Cornerstone Theater Company, a Los Angeles–based theater company Cornerstones F.C., a Ghanaian football club Cornerstone Church (disambiguation) Cornerstone Barristers Cornerstone (restaurant), a defunct restaurant in London, United Kingdom
Music Cornerstone (Austrian band), AOR-group Cornerstone (Danish band), hard rock group Cornerstone Festival, an annual Christian rock and alternative music festival
Albums and EPs Cornerstone (Styx album), 1979 Cornerstone (Holly Dunn album), 1987 Cornerstone (Hillsong Worship album), a 2012 album by Hillsong Cornerstone EP, 2012 live EP by Hillsong Church Cornerstone EP, 2013 EP by Benjamin Clementine, or its title track Cornerstone (Richard X. Heyman album), 1998
Songs "Cornerstone" (song), the second single from the Arctic Monkeys' third album Humbug
Religion Cornerstone (magazine), a magazine published by Jesus People USA in Chicago, Illinois, USA from 1971 to 2003 Cornerstone Church (disambiguation) Cornerstone Community, an Australian Christian training and mission movement Cornerstone Television, a religious television network in the United States
Schools Cornerstone Christian Academy (Bloomington, Illinois), Bloomington, Illinois Cornerstone Christian Academy (Ohio), Willoughby, Ohio Cornerstone University, a Christian university in Grand Rapids, MI
Other Cornerstone (play), 1956 Australian play by Gwen Meredith Cornerstone (software), a relational database program released by Infocom in 1985 Cornerstone Group, a grouping of socially-conservative Members of Parliament within the British Conservative Party Cornerstone (sculpture), a sculpture in Tanner Park, Southwark, London
See also Foundation Stone in Jerusalem Dedication Stone, an Aztec monument