Stack may refer to:

Places

* Stack Island, an island game reserve in Bass Strait, south-eastern Australia, in Tasmania’s Hunter Island Group * Blue Stack Mountains, in Co. Donegal, Ireland

People

Stack (surname) Stack is a surname of English origin and is commonly found in county Kerry, Ireland. Variants of the name Stack include Stace, Stacy (given name), Stacey, Stacy (disambiguation), Stacy, Stacke and De Staic. It is a baptismal name meaning "Son of Eus ...

(including a list of people with the name) * Parnell "Stacks" Edwards, a key associate in the Lufthansa heist * Robert Stack Pierce (1933–2016), an American actor and baseball player * Brian "Stack" Stevens (1941–2017), a Cornish rugby player * Stacks (rapper) (born 1985), the stage name of the rapper Yannique Barker

Arts, entertainment, and media

* '' Stack magazine'', a bimonthly publication about high school sports * ''Stacks'' (album), a 2005 album by Bernie Marsden * Stacks, trailer parks that were made vertical, in the film '' Ready Player One''

Computing

* Stack (abstract data type), abstract data type and data structure based on the principle of last in first out ** Stack (C++), a C++ standard container, simulating a stack *

Stack (Haskell) Stack is a tool to build Haskell projects and manage their dependencies. It uses the Cabal library but with a curated version of the Hackage repository called ''Stackage''. Stack competes against Cabal's binary cabal-install and has been cre ...

, a tool to build Haskell projects and manage their dependencies * Stack in Macintosh, one of a collection of documents created with HyperCard (as in a stack of virtual cards) * Stack in LiveCode, one of a collection of program scripts created with LiveCode's ''Transcript'' programming language * Call stack, stack data structure that stores information about the active subroutines of a computer program * Protocol stack, a particular software implementation of a computer networking protocol suite * Solution stack, a group of software systems, increasing in abstraction from bottom to top * Stack-based memory allocation, a memory allocation scheme based on the principle of "last in, first out" * Stacks (Mac OS), a folder view on the Dock of macOS * Stacks blockchain, a Bitcoin smart contract platform

Science and technology

* Stack (geology), a large vertical column of rock in the sea * Stack (mathematics), a sheaf that takes values in categories rather than sets * Algebraic stack, a special kind of stack commonly used in algebraic geometry ** Stacks Project, an open source collaborative mathematics textbook writing project * Stacking (chemistry), or pi stacking, attractive, noncovalent interactions between aromatic rings * Yellow stackhousia, a plant *''The Stack'', a political and design theory of planetary-scale computation coined by Benjamin H. Bratton * Stack, an assembled multistage rocket

Transportation

* Operation Stack, parking lorries on the M20 in Kent, England, when Channel crossings are disrupted * Stack interchange, a free-flowing grade-separated junction between two roads * The Stack, the interchange of I-10 and I-17 in Phoenix, Arizona

Other uses

* Stack Ltd, the company that owns 0verflow * Stack (unit), a US unit of volume for stacked firewood * Amp stack, of guitar amplifiers * Library stack, compactly spaced bookshelves in libraries * Smoke stack or chimney ** Flue-gas stack, the industrial terminology for an industrial plant chimney ** Funnel (ship), the smokestack or chimney on a ship * Stack effect, the movement of air into and out of buildings, chimneys, flue-gas stacks, or other containers