An arch is a curved structure capable of spanning a space while supporting significant weight. Arch, Arches, or The Arch may also refer to: Arches of the foot Arch (fingerprint), a basic pattern Natural arch, a rock formation shaped like an arch Geography Arch Islands, Falkland Islands Arch, Switzerland, a municipality in the canton of Bern Arch Creek (Montana), United States Arch 22, a commemorative arch in The Gambia Arch Street (Philadelphia), Pennsylvania, United States Arches, Cantal, a commune of the Cantal département, France Arches, Vosges, a commune of the Vosges département, France Arches National Park, Utah, United States Arches Cluster, a massive, young cluster of stars People Arch (name), a list of people with the given name or surname Desmond Tutu (1931–2021), South African archbishop, nicknamed "The Arch" Arts, entertainment, and media Arches (Lerdahl) (2011), composition by Fred Lerdahl Arch (sculpture), in Lynden Sculpture Garden near Milwaukee, Wisconsin ARCH+, a German magazine for architecture, urbanism and design The Arch (nightclub), a nightclub in Brighton, England The Arch, a theatre space in Holden Street Theatres, Adelaide, Australia The Arch (film), a 1968 Hong Kong drama film WARH, an FM radio station serving the St. Louis, Missouri, branded "106.5 The Arch" Science and technology Arch, the protein archaerhodopsin-3, a light-driven proton pump used for research in optogenetics, a technology for controlling brain activity using light Arch Linux, a Linux distribution that emphasizes simplicity GNU arch, in software, a source code management tool RetroArch, a free and open source emulator for a wide variety of games. Branchial arches, a series of bony "loops" present in fish, which support the gill Ships SS Arches, original name of the SS English Trader USS Arch, original name of the Soviet minesweeper T-117 Structures Gateway Arch, an iconic monument in St. Louis, Missouri, U.S. The Arch (Hong Kong), a residential skyscraper in Kowloon, Hong Kong The Arch, a structure at the north entrance to the University of Georgia which symbolizes the university ARCH Action on Rights for Children, a nonprofit children's rights organisation in the U.K. ARCH Air Medical Service (Area Rescue Consortium of Hospitals), providing critical care air ambulance service in Missouri, Illinois, and the surrounding regions Autoregressive conditional heteroskedasticity, a time series regression model of the standard deviation (volatility) of a financial time series Other uses Arch (horse), an American Thoroughbred racehorse Arch Coal, an American coal mining and processing company Inverted breve, a