Arch (disambiguation)
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An arch is a curved structure capable of spanning a space while supporting significant weight

Arch or ARCH may also refer to:

• Arch- a Greek prefix for "Leading" or "Ruling", such as in archbishop or archangel.
• The Gateway Arch in St. Louis, Missouri (USA)
• Arches National Park in Utah (USA)
• GNU arch, a source code management tool.
• Arch Linux, a Linux distribution founded by Judd Vinet that emphasizes simplicity.
• Arches, Cantal, a commune of the Cantal département, in France.
• Arches, Vosges, a commune of the Vosges département, in France.
• In dentistry, refers to the ensemble of teeth in either jaw.
• In geology, a convex bend or fold in rock layers, also called an anticline.
• Natural arch, a rock form with a naturally occurring passageway
• Arches of the foot, a part of human feet
• Arch, Switzerland, a municipality in the Swiss canton of Bern.
• On the Zork calendar, Arch is the third month of the year.
• Arch form, a sectional way of structuring a piece of music based on the repetition, in reverse order, of all or most musical sections such that the overall form is symmetrical, most often around a central movement
• Autoregressive conditional heteroskedasticity, the econometric model for time series analysis with stochastic variance
• Abbreviation for computer architecture
• In fingerprints, a basic pattern
• The Arch - a residential skyscraper in Kowloon, Hong Kong.
• In computing, short for CPU architecture
• Arch Coal, an American coal mining and processing company
• In chemical engineering, arching is a phenomenon that occurs under certain circumstances in hoppers that contain powders or particulate solids wherein the material forms a bridge at the outlet preventing further discharge

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