Stack

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

Stack (abstract data type), abstract data type and data structure based on the principle of last in first out
- Call stack, stack data structure that stores information about the active subroutines of a computer program
- Stack machine, an architecture centered around a pushdown stack
- Stack-based memory allocation, a memory allocation scheme based on the principle of "last in, first out"
A multi-layer architecture:
- Protocol stack, a particular software implementation of a computer networking protocol suite
- Solution stack or tech stack, a group of software systems, increasing in abstraction from bottom to top
Apple product features:
- Stack in Macintosh, one of a collection of documents created with HyperCard (as in a stack of virtual cards)
- Stacks (Mac OS), a folder view on the Dock of macOS
Stack (Haskell), a tool to build Haskell projects and manage their dependencies
Stack in LiveCode, one of a collection of program scripts created with LiveCode's Transcript programming language
Stacks blockchain, a Bitcoin smart contract platform
The stack (philosophy), a political and design theory of planetary-scale computation coined by Benjamin H. Bratton

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

Stack (geology), a large vertical column of rock in the sea
Stacking (chemistry), or pi stacking, attractive, noncovalent interactions between aromatic rings
Yellow stackhousia, a plant
Stack (microelectronics), a two-layer gate insulator in MOSFET, usually high-κ-oxide over SiO₂

Stack, an assembled multistage rocket
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

Stack (unit), a US unit of volume for stacked firewood
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